The iShares U.S. Aggregate Bond Index Fund - Class A (BMOAX) is a mutual fund that seeks to track the performance of the U.S. investment-grade bond market. It is managed by iShares, a leading provider of exchange-traded funds (ETFs) and other investment products. This fund offers investors a diversified portfolio of high-quality bonds, providing potential for income and stability in their investment portfolio. With a focus on U.S. bonds, this fund may be suitable for investors looking for exposure to the domestic fixed-income market.