The investment seeks a high level of income consistent with maintaining minimum fluctuation of principal. The fund normally invests at least 80% of its net assets (plus borrowing for investment purposes) in fixed-income securities that are in the three highest credit categories as ranked by a NRSRO. These investments may include: commercial paper; corporate bonds; U.S. Treasury securities; securities issued or guaranteed by U.S. government entities, agencies or instrumentalities; municipal bonds; U.S. dollar-denominated debt securities of foreign issuers; and asset-backed and mortgage-backed securities.