To pursue its objective, under normal conditions, the fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in bonds, debentures and other fixed income securities. It may invest a substantial portion of its net assets in high-yield securities (commonly referred to as "below investment grade" or "junk" bonds). The fund may invest up to 20% of its net assets in equity securities, including common stocks, preferred stocks, convertible preferred stocks, and similar instruments.