| Schedule of Investments (unaudited) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF (Percentages shown are based on Net Assets) |
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| Schedule of Investments (unaudited) (continued) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF (Percentages shown are based on Net Assets) |
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| Schedule of Investments (unaudited) (continued) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF (Percentages shown are based on Net Assets) |
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| Schedule of Investments (unaudited) (continued) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF (Percentages shown are based on Net Assets) |
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| Schedule of Investments (unaudited) (continued) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF (Percentages shown are based on Net Assets) |
Affiliates
Investments in issuers considered to be affiliates of the Fund during the nine months ended December 31, 2019, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:
| Affiliated Issuer | Shares Held at 03/31/19 |
Net Activity | Shares Held at 12/31/19 |
Value at 12/31/19 |
Income | Net Realized Gain (Loss) |
Change in Unrealized |
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| BlackRock Cash Funds: Institutional, |
2,341,241,894 | 968,051,114 | 3,309,293,008 | $ | 3,310,616,725 | $ | 9,282,743 | (a) | $ | (106,936 | ) | $ | (3,962 | ) | ||||||||||||||
| BlackRock Cash Funds: Treasury, |
64,832,167 | 48,948,679 | 113,780,846 | 113,780,846 | 1,063,750 | — | — | |||||||||||||||||||||
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| $ | 3,424,397,571 | $ | 10,346,493 | $ | (106,936 | ) | $ | (3,962 | ) | |||||||||||||||||||
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| (a) | Includes securities lending income earned from the reinvestment of cash collateral from loaned securities (excluding collateral investment fees), net of fees and other payments to and from borrowers of securities, and less fees paid to BTC as securities lending agent. |
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| Schedule of Investments (unaudited) (continued) December 31, 2019 |
iShares® Core S&P Mid-Cap ETF |
Futures Contracts
| Description | Number of Contracts |
Expiration Date |
Notional Amount (000) |
Value/ Unrealized Appreciation (Depreciation) |
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| Long Contracts |
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| S&P MidCap 400 E-Mini |
472 | 03/20/20 | $ | 97,459 | $ | 155,906 | ||||||||||
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Fair Value Measurements
Various inputs are used in determining the fair value of financial instruments. For description of the input levels and information about the Fund’s policy regarding valuation of financial instruments, refer to a recently published shareholder report. Shareholder reports are available on the Fund’s website at iShares.com and on the U.S. Securities and Exchange Commission website at sec.gov.
The following table summarizes the value of the Fund’s investments according to the fair value hierarchy as of December 31, 2019. The breakdown of the Fund’s investments into major categories is disclosed in the Schedule of Investments above.
| Level 1 | Level 2 | Level 3 | Total | |||||||||||||
| Investments |
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| Assets |
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| Common Stocks |
$ | 53,578,919,681 | $ | — | $ | — | $ | 53,578,919,681 | ||||||||
| Money Market Funds |
3,424,397,571 | — | — | 3,424,397,571 | ||||||||||||
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| $ | 57,003,317,252 | $ | — | $ | — | $ | 57,003,317,252 | |||||||||
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| Derivative financial instruments(a) |
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| Assets |
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| Futures Contracts |
$ | 155,906 | $ | — | $ | — | $ | 155,906 | ||||||||
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| (a) | Shown at the unrealized appreciation (depreciation) on the contracts. |
| Portfolio Abbreviations — Equity | ||
| NVS | Non-Voting Shares | |
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