iShares Dow Jones U.S. Healthcare Sector Index Fund (the Fund) is a non-diversified fund. The Fund seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Dow Jones U.S. Health Care Index (the Index). The Index measures the performance of the healthcare sector of the United States equity market, and includes companies in the industry groups, such as healthcare equipment and services, pharmaceuticals and biotechnology. The Fund invests in a representative sample of securities included in the Index that collectively has an investment profile similar to the Index. Due to the use of representative sampling, the Fund may or may not hold all of the securities that are included in the Index. The Fund�s investment advisor is BlackRock Fund Advisors (BFA).