BlackRock Balanced Capital Fund, Inc.

BlackRock Basic Value Fund, Inc.

BlackRock Bond Fund, Inc.

BlackRock Total Return Fund

BlackRock California Municipal Series Trust

BlackRock California Municipal Opportunities Fund

BlackRock Capital Appreciation Fund, Inc.

BlackRock Emerging Markets Fund, Inc.

BlackRock Equity Dividend Fund

BlackRock EuroFund

BlackRock Focus Growth Fund, Inc.

BlackRock Funds^SM

BlackRock Advantage Emerging Markets Fund

BlackRock Advantage International Fund

BlackRock Advantage Large Cap Growth Fund

BlackRock Advantage Small Cap Core Fund

BlackRock Advantage Small Cap Growth Fund

BlackRock All-Cap Energy & Resources Portfolio

BlackRock Alternative Capital Strategies Fund

BlackRock Commodity Strategies Fund

BlackRock Emerging Markets Dividend Fund

BlackRock Emerging Markets Equity Strategies Fund

BlackRock Energy & Resources Portfolio

BlackRock Global Long/Short Credit Fund

BlackRock Global Long/Short Equity Fund

BlackRock Health Sciences Opportunities Portfolio

BlackRock High Equity Income Fund

BlackRock Impact Bond Fund

BlackRock Impact U.S. Equity Fund

BlackRock International Dividend Fund

BlackRock Mid-Cap Growth Equity Portfolio

BlackRock Multi-Manager Alternative Strategies Fund

BlackRock Real Estate Securities Fund

BlackRock Science & Technology Opportunities Portfolio

BlackRock Tactical Opportunities Fund

BlackRock Total Emerging Markets Fund

BlackRock Total Factor Fund

BlackRock Funds II

BlackRock 20/80 Target Allocation Fund

BlackRock 40/60 Target Allocation Fund

BlackRock 60/40 Target Allocation Fund

BlackRock 80/20 Target Allocation Fund

BlackRock Core Bond Portfolio

BlackRock Credit Strategies Income Fund

BlackRock Dynamic High Income Portfolio

BlackRock Emerging Markets Flexible Dynamic Bond Portfolio

BlackRock Floating Rate Income Portfolio

BlackRock Global Dividend Portfolio

BlackRock GNMA Portfolio

BlackRock High Yield Bond Portfolio

BlackRock Inflation Protected Bond Portfolio

BlackRock LifePath^® Smart Beta 2020 Fund

BlackRock LifePath^® Smart Beta 2025 Fund

BlackRock LifePath^® Smart Beta 2030 Fund

BlackRock LifePath^® Smart Beta 2035 Fund

BlackRock LifePath^® Smart Beta 2040 Fund

BlackRock LifePath^® Smart Beta 2045 Fund

BlackRock LifePath^® Smart Beta 2050 Fund

BlackRock LifePath^® Smart Beta 2055 Fund

BlackRock LifePath^® Smart Beta 2060 Fund

BlackRock LifePath^® Smart Beta Retirement Fund

BlackRock Low Duration Bond Portfolio

BlackRock Managed Income Fund

BlackRock Multi-Asset Income Portfolio

BlackRock Strategic Income Opportunities Portfolio

BlackRock U.S. Government Bond Portfolio

BlackRock Funds III

BlackRock CoreAlpha Bond Fund

BlackRock Global Allocation Fund, Inc.

BlackRock Global SmallCap Fund, Inc.

BlackRock Large Cap Series Funds, Inc.

BlackRock Event Driven Equity Fund

BlackRock Advantage Large Cap Core Fund

BlackRock Advantage Large Cap Value Fund

BlackRock Large Cap Focus Growth Fund

BlackRock Latin America Fund, Inc.

BlackRock Long-Horizon Equity Fund

BlackRock Mid Cap Dividend Series, Inc.

BlackRock Mid Cap Dividend Fund

BlackRock Multi-State Municipal Series Trust

BlackRock New Jersey Municipal Bond Fund

BlackRock New York Municipal Opportunities Fund

BlackRock Pennsylvania Municipal Bond Fund

BlackRock Municipal Bond Fund, Inc.

BlackRock High Yield Municipal Fund

BlackRock National Municipal Fund

BlackRock Short-Term Municipal Fund

BlackRock Municipal Series Trust

BlackRock Strategic Municipal Opportunities Fund

BlackRock Natural Resources Trust

BlackRock Pacific Fund, Inc.

BlackRock Series, Inc.

BlackRock International Fund

BlackRock Small Cap Growth Fund II

BlackRock Strategic Global Bond Fund, Inc.

BlackRock Value Opportunities Fund, Inc.

Managed Account Series

BlackRock U.S. Mortgage Portfolio

(each, a “Fund”)

Supplement dated August 30, 2017 to the Investor Prospectus of each Fund (each, a “Prospectus”)

Effective September 5, 2017, each Prospectus is amended as follows:

The section of each Prospectus entitled “Account Information—How to Buy, Sell, Exchange and Transfer Shares—How to Buy Shares—How to Pay for Shares—Making payment for purchases” is deleted in its entirety and replaced with the following:

How to Pay for Shares Making payment for purchases Payment for an order must be made in Federal funds or other immediately available funds by the time specified by your Financial Intermediary, but in no event later than 4:00 p.m. (Eastern time) on the second business day (in the case of Investor Shares) or the first business day (in the case of Institutional Shares) following BlackRock’s receipt of the order. If payment is not received by this time, the order will be canceled and you and your Financial Intermediary will be responsible for any loss to the Fund.   For shares purchased directly from the Fund, a check payable to BlackRock Funds which bears the name of the Fund must accompany a completed purchase application. There is a $20 fee for each purchase check that is returned due to insufficient funds. The Fund does not accept third-party checks. You may also wire Federal funds to the Fund to purchase shares, but you must call (800) 441-7762 before doing so to confirm the wiring instructions.

The following disclosure replaces the second paragraph of or is added as the second paragraph to, as applicable, the section of each Prospectus entitled “Account Information—How to Buy, Sell, Exchange and Transfer Shares—How to Sell Shares—Full or Partial Redemption of Shares—Have your Financial Intermediary submit your sales order”:

Regardless of the method the Fund uses to make payment of your redemption proceeds (check, wire or ACH), your redemption proceeds typically will be sent one to two business days after your request is submitted, but in any event, within seven days.

Shareholders should retain this Supplement for future reference.

PRO-ALLINV-0817SUP

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