The fund normally invests at least 80% of its net assets (plus borrowings for investment purposes) in a diversified portfolio of bonds and other fixed income instruments. It principally invests in corporate bonds, U.S. Treasuries and supranational bonds, with an emphasis on corporate bonds. The fund may also invest in U.S. governmental agencies, commercial and residential mortgage-backed securities and other asset-backed securities. It invests mainly in domestic securities, and to a lesser extent may also invest in U.S. dollar denominated foreign securities.