iShares FTSE KLD 400 Social Index Fund (the Fund), formerly iShares KLD 400 Social Index Fund, seeks investment results that correspond generally to the price and yield performance of the FTSE KLD 400 Social Index (the Index). The Index is designed to provide exposure to the common stocks of companies that KLD Research & Analytics, Inc. (KLD) determines have positive environmental, social and governance characteristics. The Index consists of 400 companies drawn from the universe, supplied by FTSE annually, of the 3,000 largest NYSE and NASDAQ-listed United States equities ranked by investable market capitalization (after the application of any investability weightings). Companies that KLD determines have significant involvement in businesses, such as alcohol, tobacco, firearms, nuclear power, military weapons and gambling are not eligible for inclusion in the Index. The Fund’s investment advisor is BlackRock Fund Advisors.