Under normal circumstances, the fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in high yield instruments (also known as "junk bonds") and other financial instruments with economic characteristics similar to such instruments, such as derivatives and exchange-traded funds ("ETFs"). The fund may invest the remainder of its assets in investment grade instruments including securities issued or guaranteed by the U.S. government and its agencies or instrumentalities, municipal bonds, corporate bonds, and etc.