The Fund seeks to achieve its investment objective by investing in fixed income securities that Wellington Management Company LLP (Wellington Management) considers to be attractive from a total return perspective. The Fund invests, under normal circumstances, at least 80 percent of its net assets (including any borrowings for investment purposes) in fixed-income securities. The Fund will invest primarily in investment grade fixed income securities. The Fund may invest in securities and other instruments issued by both U.S. and foreign issuers.