The investment seeks high current income with a secondary objective of long-term capital appreciation. The fund primarily invests in a diversified mix of fixed-rate and floating-rate debt securities. It may invest without limit in derivative instruments, securities rated below investment-grade, foreign securities. The fund normally invests no more than 25% of total assets at the time of investment in obligations of issuers in emerging-market countries. It may invest in securities of any maturity and does not have target-average duration.