Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised January 28, 2021):

iShares Currency Hedged JPX-Nikkei 400 ETF

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Asia 50 ETF

iShares Global 100 ETF

iShares Global Comm Services ETF

iShares Global Consumer Discretionary ETF

iShares Global Healthcare ETF

iShares Global Materials ETF

iShares Global Tech ETF

iShares Global Timber & Forestry ETF

iShares India 50 ETF

iShares Latin America 40 ETF

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised October 30, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Emerging Markets Infrastructure ETF

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised December 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares International Dividend Growth ETF

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Europe ETF

iShares Global Consumer Staples ETF

iShares Global Energy ETF

iShares Global Financials ETF

iShares Global Industrials ETF

iShares Global Infrastructure ETF

iShares International Developed Property ETF

iShares International Preferred Stock ETF

iShares JPX-Nikkei 400 ETF

iShares North American Natural Resources ETF

Supplement to the Summary Prospectus, Prospectus and Statement of Additional Information all dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Clean Energy ETF

Supplement to the Summary Prospectus, Prospectus and Statement of Additional Information all dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Utilities ETF

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of September 1, 2020 (as revised September 30, 2020):

iShares Asia/Pacific Dividend ETF

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020 (as revised November 23, 2020), and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares Emerging Markets Dividend ETF

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020, and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares Global REIT ETF

Supplement to the Summary Prospectus dated as of September 1, 2020 and Prospectus dated as of September 1, 2020 (as revised December 7, 2020), and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares International Select Dividend ETF

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020, and to the Statement of Additional Information dated as of September 1, 2020 (as April 19, 2021):

iShares International Developed Real Estate ETF

Supplement to the Summary Prospectus dated as of September 30, 2020, and to the Prospectus dated as of September 22, 2020, and to the Statement of Additional Information dated as of September 22, 2020 (as revised January 14, 2021):

iShares Virtual Work and Life Multisector ETF

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of December 1, 2020:

iShares Core MSCI Europe ETF

iShares Core MSCI Pacific ETF

iShares MSCI Kokusai ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares China Large-Cap ETF

iShares MSCI EAFE ETF

iShares MSCI EAFE Growth ETF

iShares MSCI EAFE Min Vol Factor ETF

iShares MSCI EAFE Small-Cap ETF

iShares MSCI EAFE Value ETF

iShares MSCI Europe Financials ETF

iShares MSCI Europe Small-Cap ETF

iShares MSCI Intl Momentum Factor ETF

iShares MSCI Intl Multifactor ETF

iShares MSCI Intl Quality Factor ETF

iShares MSCI Intl Size Factor ETF

iShares MSCI Intl Small-Cap Multifactor ETF

iShares MSCI Intl Value Factor ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Core MSCI EAFE ETF

iShares Core MSCI International Developed Markets ETF

iShares Core MSCI Total International Stock ETF

iShares Cybersecurity and Tech ETF

iShares Exponential Technologies ETF

iShares Genomics Immunology and Healthcare ETF

iShares MSCI ACWI ETF

iShares MSCI ACWI ex U.S. ETF

iShares MSCI ACWI Low Carbon Target ETF

iShares MSCI All Country Asia ex Japan ETF

iShares MSCI China A ETF

iShares MSCI Global Multifactor ETF

iShares Robotics and Artificial Intelligence Multisector ETF

iShares Self-Driving EV and Tech ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 28, 2021):

iShares Adaptive Currency Hedged MSCI EAFE ETF

iShares Currency Hedged MSCI ACWI ex U.S. ETF

iShares Currency Hedged MSCI EAFE ETF

iShares Currency Hedged MSCI EAFE Small-Cap ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares ESG Advanced MSCI EAFE ETF

iShares ESG Aware MSCI EAFE ETF

iShares MSCI Denmark ETF

iShares MSCI Finland ETF

iShares MSCI Germany Small-Cap ETF

iShares MSCI Indonesia ETF

iShares MSCI Ireland ETF

iShares MSCI Japan Equal Weighted ETF

iShares MSCI Japan Value ETF

iShares MSCI New Zealand ETF

iShares MSCI Norway ETF

iShares MSCI Poland ETF

iShares MSCI United Kingdom ETF

iShares MSCI United Kingdom Small-Cap ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Australia ETF

iShares MSCI Austria ETF

iShares MSCI Belgium ETF

iShares MSCI Canada ETF

iShares MSCI Eurozone ETF

iShares MSCI France ETF

iShares MSCI Germany ETF

iShares MSCI Israel ETF

iShares MSCI Italy ETF

iShares MSCI Japan ETF

iShares MSCI Japan Small-Cap ETF

iShares MSCI Mexico ETF

iShares MSCI Netherlands ETF

iShares MSCI Pacific ex Japan ETF

iShares MSCI Russia ETF

iShares MSCI Singapore ETF

iShares MSCI South Africa ETF

iShares MSCI Spain ETF

iShares MSCI Sweden ETF

iShares MSCI Switzerland ETF

iShares MSCI Thailand ETF

iShares MSCI Turkey ETF

iShares MSCI World ETF

Supplement to the Summary Prospectus dated as of December 30, 2020, and Prospectus dated as of December 30, 2020 (as revised January 7, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Philippines ETF

Supplement to the Summary Prospectus dated as of December 30, 2020, and Prospectus dated as of December 30, 2020 (as revised

January 7, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Hong Kong ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares ESG Advanced MSCI EM ETF

iShares ESG MSCI EM Leaders ETF

iShares MSCI Argentina and Global Exposure ETF

iShares MSCI Brazil Small-Cap ETF

iShares MSCI China ETF

iShares MSCI China Small-Cap ETF

iShares MSCI Emerging Markets ex China ETF

iShares MSCI Global Impact ETF

iShares MSCI India ETF

iShares MSCI India Small-Cap ETF

iShares MSCI Kuwait ETF

iShares MSCI Peru ETF

iShares MSCI Qatar ETF

iShares MSCI Saudi Arabia ETF

iShares MSCI UAE ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Canada ETF

iShares Currency Hedged MSCI Emerging Markets ETF

iShares Currency Hedged MSCI Eurozone ETF

iShares Currency Hedged MSCI Germany ETF

iShares Currency Hedged MSCI Japan ETF

iShares Currency Hedged MSCI Mexico ETF

iShares Currency Hedged MSCI United Kingdom ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares Core MSCI Emerging Markets ETF

iShares ESG Aware MSCI EM ETF

iShares MSCI Brazil ETF

iShares MSCI BRIC ETF

iShares MSCI Chile ETF

iShares MSCI Colombia ETF

iShares MSCI Emerging Markets Asia ETF

iShares MSCI Emerging Markets ETF

iShares MSCI Emerging Markets Min Vol Factor ETF

iShares MSCI Emerging Markets Multifactor ETF

iShares MSCI Emerging Markets Small-Cap ETF

iShares MSCI Global Agriculture Producers ETF

iShares MSCI Global Energy Producers ETF

iShares MSCI Global Gold Miners ETF

iShares MSCI Global Metals & Mining Producers ETF

iShares MSCI Global Min Vol Factor ETF

iShares MSCI Global Silver and Metals Miners ETF

iShares MSCI Malaysia ETF

iShares MSCI South Korea ETF

iShares MSCI Taiwan ETF

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020 (as revised March 1, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Frontier and Select EM ETF

Supplement to the Summary Prospectus dated March 24, 2021, and to the Prospectus and the Statement of Additional Information both dated as of March 16, 2021:

iShares International Developed Small Cap Value Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged JPX-Nikkei 400 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised January 28, 2021):

iShares Currency Hedged JPX-Nikkei 400 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Asia 50 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Asia 50 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global 100 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global 100 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Comm Services ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Comm Services ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Consumer Discretionary ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Consumer Discretionary ETF

iShares Global Healthcare ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Healthcare ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Materials ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Materials ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Tech ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Tech ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Timber & Forestry ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Timber & Forestry ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares India 50 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares India 50 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Latin America 40 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Latin America 40 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Emerging Markets Infrastructure ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised October 30, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares Emerging Markets Infrastructure ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Dividend Growth ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised December 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised April 19, 2021):

iShares International Dividend Growth ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Europe ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Europe ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Consumer Staples ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Consumer Staples ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Energy ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Energy ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Financials ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Financials ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Industrials ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Industrials ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Infrastructure ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Infrastructure ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Developed Property ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares International Developed Property ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Preferred Stock ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares International Preferred Stock ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares JPX-Nikkei 400 ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares JPX-Nikkei 400 ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares North American Natural Resources ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of July 31, 2020 (as revised August 17, 2020), and to the Statement of Additional Information dated as of July 31, 2020 (as revised May 3, 2021):

iShares North American Natural Resources ETF

iShares Trust | iShares Global Clean Energy ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and Statement of Additional Information all dated as of July 31, 2020 (as revised April 19, 2021):

iShares Global Clean Energy ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global Utilities ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and Statement of Additional Information all dated as of July 31, 2020 (as revised May 3, 2021):

iShares Global Utilities ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Global REIT ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020, and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares Global REIT ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Select Dividend ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus dated as of September 1, 2020 and Prospectus dated as of September 1, 2020 (as revised December 7, 2020), and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares International Select Dividend ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Developed Real Estate ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020, and to the Statement of Additional Information dated as of September 1, 2020 (as April 19, 2021):

iShares International Developed Real Estate ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Virtual Work and Life Multisector ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus dated as of September 30, 2020, and to the Prospectus dated as of September 22, 2020, and to the Statement of Additional Information dated as of September 22, 2020 (as revised January 14, 2021):

iShares Virtual Work and Life Multisector ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Core MSCI Europe ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of December 1, 2020:

iShares Core MSCI Europe ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Core MSCI Pacific ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of December 1, 2020:

iShares Core MSCI Pacific ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Kokusai ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of December 1, 2020:

iShares MSCI Kokusai ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares China Large-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares China Large-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI EAFE Growth ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI EAFE Growth ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI EAFE Min Vol Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI EAFE Min Vol Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI EAFE Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI EAFE Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI EAFE Value ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI EAFE Value ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Europe Financials ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Europe Financials ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Europe Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Europe Small-Cap ETF

iShares Trust | iShares MSCI Intl Momentum Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Momentum Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Intl Multifactor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Multifactor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Intl Quality Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Quality Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Intl Size Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Size Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Intl Small-Cap Multifactor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Small-Cap Multifactor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Intl Value Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised December 17, 2020):

iShares MSCI Intl Value Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Core MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Core MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Core MSCI International Developed Markets ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Core MSCI International Developed Markets ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Core MSCI Total International Stock ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Core MSCI Total International Stock ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Cybersecurity and Tech ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Cybersecurity and Tech ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Exponential Technologies ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Exponential Technologies ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Genomics Immunology and Healthcare ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Genomics Immunology and Healthcare ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI ACWI ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI ACWI ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI ACWI ex U.S. ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI ACWI ex U.S. ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI ACWI Low Carbon Target ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI ACWI Low Carbon Target ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI All Country Asia ex Japan ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI All Country Asia ex Japan ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI China A ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI China A ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Global Multifactor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares MSCI Global Multifactor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Robotics and Artificial Intelligence Multisector ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Robotics and Artificial Intelligence Multisector ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Self-Driving EV and Tech ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 14, 2021):

iShares Self-Driving EV and Tech ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Adaptive Currency Hedged MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 28, 2021):

iShares Adaptive Currency Hedged MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI ACWI ex U.S. ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI ACWI ex U.S. ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI EAFE Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 1, 2020, and to the Statement of Additional Information dated as of December 1, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI EAFE Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares ESG Advanced MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares ESG Advanced MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares ESG Aware MSCI EAFE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares ESG Aware MSCI EAFE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Denmark ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Denmark ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Finland ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Finland ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Germany Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Germany Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Indonesia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Indonesia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Ireland ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Ireland ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Japan Equal Weighted ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Japan Equal Weighted ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Japan Value ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Japan Value ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI New Zealand ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI New Zealand ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Norway ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Norway ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Poland ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Poland ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI United Kingdom ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI United Kingdom ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI United Kingdom Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI United Kingdom Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Philippines ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus dated as of December 30, 2020, and Prospectus dated as of December 30, 2020 (as revised January 7, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised May 3, 2021):

iShares MSCI Philippines ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares ESG Advanced MSCI EM ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares ESG Advanced MSCI EM ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares ESG MSCI EM Leaders ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares ESG MSCI EM Leaders ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Argentina and Global Exposure ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Argentina and Global Exposure ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Brazil Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Brazil Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI China ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI China ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI China Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI China Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Global Impact ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Global Impact ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI India ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI India ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI India Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI India Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Kuwait ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Kuwait ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Peru ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Peru ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Qatar ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Qatar ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI Saudi Arabia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Saudi Arabia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares MSCI UAE ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI UAE ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI Canada ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Canada ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI Eurozone ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Eurozone ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI Germany ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Germany ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI Japan ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Japan ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI Mexico ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Mexico ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares Currency Hedged MSCI United Kingdom ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI United Kingdom ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares Trust | iShares International Developed Small Cap Value Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares Trust

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus dated March 24, 2021, and to the Prospectus and the Statement of Additional Information both dated as of March 16, 2021:

iShares International Developed Small Cap Value Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares Asia/Pacific Dividend ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus, Prospectus and the Statement of Additional Information all dated as of September 1, 2020 (as revised September 30, 2020):

iShares Asia/Pacific Dividend ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares Emerging Markets Dividend ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of September 1, 2020 (as revised November 23, 2020), and to the Statement of Additional Information dated as of September 1, 2020 (as revised January 14, 2021):

iShares Emerging Markets Dividend ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Australia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Australia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Austria ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Austria ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Belgium ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Belgium ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Canada ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Canada ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Eurozone ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Eurozone ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI France ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI France ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Germany ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Germany ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Israel ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Israel ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Italy ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Italy ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Japan ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Japan ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Japan Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Japan Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Mexico ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Mexico ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Netherlands ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Netherlands ETF

iShares, Inc. | iShares MSCI Pacific ex Japan ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Pacific ex Japan ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Russia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Russia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Singapore ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Singapore ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI South Africa ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI South Africa ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Spain ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Spain ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Sweden ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Sweden ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Switzerland ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Switzerland ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Thailand ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Thailand ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Turkey ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI Turkey ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI World ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information all dated as of December 30, 2020 (as revised April 9, 2021:

iShares MSCI World ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Hong Kong ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus dated as of December 30, 2020, and Prospectus dated as of December 30, 2020 (as revised

January 7, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Hong Kong ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets ex China ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 14, 2021):

iShares MSCI Emerging Markets ex China ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares Currency Hedged MSCI Emerging Markets ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised January 28, 2021):

iShares Currency Hedged MSCI Emerging Markets ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares Core MSCI Emerging Markets ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares Core MSCI Emerging Markets ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares ESG Aware MSCI EM ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares ESG Aware MSCI EM ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Brazil ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Brazil ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI BRIC ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI BRIC ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Chile ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Chile ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Colombia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Colombia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets Asia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Emerging Markets Asia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Emerging Markets ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets Min Vol Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Emerging Markets Min Vol Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets Multifactor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Emerging Markets Multifactor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Emerging Markets Small-Cap ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Emerging Markets Small-Cap ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Agriculture Producers ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Agriculture Producers ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Energy Producers ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Energy Producers ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Gold Miners ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Gold Miners ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Metals & Mining Producers ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Metals & Mining Producers ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Min Vol Factor ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Min Vol Factor ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Global Silver and Metals Miners ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Global Silver and Metals Miners ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Malaysia ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Malaysia ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI South Korea ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI South Korea ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Taiwan ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020, and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Taiwan ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares, Inc. | iShares MSCI Frontier and Select EM ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

iShares®

iShares, Inc.

Supplement dated May 3, 2021 (the “Supplement”)

to the Summary Prospectus (the “Summary Prospectus”),

Prospectus (the “Prospectus”) and

Statement of Additional Information (“SAI”)

for each of the Funds listed below (each, a “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, each Fund’s Summary Prospectus, Prospectus and SAI.

Change in each Fund’s “Principal Investment Strategies”

The following paragraph of the section of the Summary Prospectus and Prospectus entitled “Principal Investment Strategies” for each of the Funds listed in Appendix A, except for the iShares ESG Advanced MSCI EAFE ETF, iShares ESG Aware MSCI EAFE ETF, iShares ESG Advanced MSCI EM ETF, iShares ESG MSCI EM Leaders ETF and iShares ESG Aware MSCI EM ETF, shall be deleted in its entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its Underlying Index (i.e., depositary receipts representing securities of the Underlying Index) and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

Change in each Fund’s “Summary of Principal Risks”

The “Tracking Error Risk” paragraph of the section of the Summary Prospectus and Prospectus entitled “Summary of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Further Discussion of Principal Risks”

The paragraph entitled “Tracking Error Risk” in the section of the Prospectus entitled “Further Discussion of Principal Risks” for each of the Funds shall be amended to add the following:

Tracking error may occur due to differences between the methodologies used in calculating the index value and determining the Fund’s NAV.

Change in each Fund’s “Shareholder Information”

The paragraphs entitled “Determination of Net Asset Value” of the section of the Prospectus entitled “Shareholder Information” for each of the Funds shall be deleted in its entirety and replaced with the following:

Determination of Net Asset Value. The NAV of the Fund normally is determined once daily Monday through Friday, generally as of the close of regular trading hours of the New York Stock Exchange (“NYSE”) (normally 4:00 p.m., Eastern time) on each day that the NYSE is open for trading, based on prices at the time of closing, provided that any Fund assets or liabilities denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers. The NAV of the Fund is calculated by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent.

The value of the securities and other assets and liabilities held by the Fund are determined pursuant to valuation policies and procedures approved by the Board.

Equity securities and other equity instruments for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) are valued at net asset value. Shares of underlying exchange-traded closed-end funds or other ETFs are valued at their most recent closing price.

Generally, trading in non-U.S. securities and money market instruments is substantially completed each day at various times prior to the close of

business on the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times.

When market quotations are not readily available or are believed by BlackRock to be unreliable, the Fund’s investments are valued at fair value. Fair value determinations are made by BlackRock in accordance with policies and procedures approved by the Board. BlackRock may conclude that a market quotation is not readily available or is unreliable if a security or other asset or liability does not have a price source due to its lack of trading or other reasons, if a market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value, where the security or other asset or liability is thinly traded, when there is a significant event subsequent to the most recent market quotation, or if the trading market on which a security is listed is suspended or closed and no appropriate alternative trading market is available. A “significant event” is deemed to occur if BlackRock determines, in its reasonable business judgment prior to or at the time of pricing the Fund’s assets or liabilities, that the event is likely to cause a material change to the closing market price of one or more assets held by, or liabilities of, the Fund.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Fair value represents a good faith approximation of the value of an asset or liability. The fair value of an asset or liability held by the Fund is the amount the Fund might reasonably expect to receive from the current sale of that asset or the cost to extinguish that liability in an arm’s-length transaction. Valuing the Fund’s investments using fair value pricing will result in prices that may differ from current market valuations and that may not be the prices at which those investments could have been sold during the period in which the particular fair values were used. Use of fair value prices and certain current market valuations could result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index.

Appendix A

iShares Funds

Supplement to the Summary Prospectus and Prospectus both dated as of December 30, 2020 (as revised March 1, 2021), and to the Statement of Additional Information dated as of December 30, 2020 (as revised April 9, 2021):

iShares MSCI Frontier and Select EM ETF

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.