Vanguard Core Bond Investor (VCORX)

The fund invests in fixed income securities of various maturities, yields, and qualities. Under normal circumstances, it invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in bonds, which include fixed income securities such as corporate bonds; U.S. Treasury obligations and other U.S. government and agency securities; and asset-backed, mortgage-backed and mortgage-related securities.