iShares iBoxx $ Investment Grade Corporate Bond Fund (the Fund) seeks investment results that correspond generally to the price and yield performance of a segment of the United States investment-grade corporate bond market as defined by the iBoxx $ Liquid Investment Grade Index (the Index). The Index measures the performance of a fixed number of highly liquid investment-grade corporate bonds. The Index is a rules-based index consisting of up to 100 highly liquid, investment-grade, United States dollar-denominated corporate bonds that seek to maximize liquidity while maintaining representation of the corporate bond market. The Fund invests in a representative sample of the securities included in the Index that collectively has an investment profile similar to the Index. The Fund's investment advisor is Barclays Global Fund Advisors.