To pursue its goal, the fund normally invests in a diversified portfolio of fixed-income securities of U.S. and foreign issuers. It normally invests primarily in fixed-income securities rated, at the time of purchase, investment grade (i.e., Baa3/BBB- or higher) or the unrated equivalent as determined by the fund's sub-adviser. The fund, however, may invest up to 25% of its net assets in fixed-income securities rated, at the time of purchase, below investment grade ("high yield" or "junk" bonds) or the unrated equivalent as determined by the fund's sub-adviser.