The investment seeks current income. Under normal market conditions, the fund invests at least 80% of its net assets, plus borrowings for investment purposes, in "investment grade" fixed income securities. Corporate debt securities, including notes, bonds, debentures and commercial paper, are fixed income securities usually issued by businesses to finance their operations. These securities may be secured or unsecured, may be issued by U.S. or foreign entities and may carry variable or floating rates of interest.