The investment seeks to track the performance of the Bloomberg U.S. Aggregate Float Adjusted Index. This index measures the performance of a wide spectrum of public, investment-grade, taxable, fixed income securities in the United States-including government, corporate, and international dollar-denominated bonds, as well as mortgage-backed and asset-backed securities-all with maturities of more than 1 year. This popular ETF offers exposure to entire investment grade bond market in a single ticker, with holdings in T-Bills, corporates, MBS, and agency bonds. BND could make for a good choice for investors who currently have little to no bond exposure and are looking to broadly increase their holdings in the segment across a variety of sectors.