iShares Morningstar Mid-Cap ETF (IMCB) Exchange: NYSE ARCA

The Fund seeks to track the investment results of the Morningstar® US Mid Core IndexSM (the “Underlying Index”), which measures the performance of stocks issued by mid-capitalization companies that have exhibited similar “growth” and “value” characteristics as determined by Morningstar, Inc.'s (“Morningstar” or the “Index Provider”) proprietary index methodology. Underlying Index constituents are drawn from the pool of stocks issued by U.S. based companies that trade publicly on the New York Stock Exchange (“NYSE”), the NYSE Amex Equities or The NASDAQ Stock Market. The Morningstar index methodology defines “mid-capitalization” stocks as those stocks that generally fall between the 70th and 90th percentile of the market capitalization of the stocks eligible to be included in the Morningstar® US Market IndexSM (a diversified broad market index that represents approximately 97% of the market capitalization of publicly-traded U.S. stocks). The Index Provider then designates stocks as “core,” “growth” or “value” based on their style orientations. Stocks of companies with, for example, relatively higher average historical and forecasted earnings, sales, equity and cash flow growth would be designated as “growth” securities. Stocks of companies with, for example, relatively low valuations based on price-to-book ratios, price-to-earnings ratios and other factors, are designated as “value” securities. Stocks that are not designated as “growth” or “value” securities are designated as “core” securities and are included in the Underlying Index. The stocks in the Underlying Index are weighted according to the total value of shares that are publicly owned and available for trading. As of April 30, 2020, a significant portion of the Underlying Index is represented by securities of companies in the industrial services and real estate industries or sectors. The components of the Underlying Index are likely to change over time.BFA uses a “passive” or indexing approach to try to achieve the Fund’s investment objective. Unlike many investment companies, the Fund does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.Indexing may eliminate the chance that the Fund will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by aiming to keep portfolio turnover low in comparison to actively managed investment companies.BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of an applicable underlying index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the securities in the Underlying Index.The Fund generally invests at least 90% of its assets in securities of the Underlying Index and in depositary receipts representing securities of the Underlying Index. The Fund may invest the remainder 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, 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.The Fund may lend securities representing up to one-third of the value of the Fund's total assets (including the value of any collateral received).The Underlying Index is sponsored by Morningstar, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.