The fund seeks to achieve its investment objective by investing at least 80% of its net assets in a diversified portfolio of Fixed Income Instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts, or swap agreements. It invests primarily in investment grade debt securities, but may invest up to 15% of its total assets in high yield securities, as rated by Moody's, S&P or Fitch, or, if unrated, as determined by PIMCO.