The fund invests, under normal circumstances, at least 80% of its net assets in convertible securities, and in derivatives and other instruments that have economic characteristics similar to such securities. It may invest in securities of any market capitalization or credit quality, and may from time to time invest a significant amount of its assets in securities of smaller companies. The fund may invest up to 20% of its net assets in common stocks, non-convertible preferred stocks, and non-convertible fixed income securities.