The iShares Core S&P Total U.S. Stock Market ETF (the Fund), formerly iShares S&P 1500 Index Fund, seeks investment results that correspond to the price and yield performance, before fees and expences, of the Standard & Poor’s Composite 1500 (the Index). The Index consists of the S&P 500, Midcap 400 and SmallCap 600 indices, which together represent approximately 92% of the total United States equity market. The S&P 500 measures the performance of the large-capitalization sector of the United States equity market. The S&P 400 measures the performance of the mid-capitalization sector of the United States equity market. The Fund will concentrate its investments (that is holds 25% or more of its total assets) in a particular industry or group of industries, which may include large-, mid- or small-capitalization companies. It may also engage in securities lending. BlackRock Fund Advisors (BFA) is the investment adviser of the Fund.