iShares Trust - iShares Core U.S. Aggregate Bond ETF is an exchange traded fund launched by BlackRock, Inc. The fund is managed by BlackRock Fund Advisors. It invests in fixed income markets of the United States. The fund invests in U.S. dollars denominated, fixed rate investment grade treasury bonds, government-related bonds, corporate bonds, mortgage-backed pass-through securities, commercial mortgage-backed securities and asset backed securities that have a remaining maturity of at least one year. It seeks to track the performance of the Bloomberg U.S. Aggregate Bond Index, by using representative sampling technique. iShares Trust - iShares Core U.S. Aggregate Bond ETF was formed on September 22, 2003 and is domiciled in the United States.