The investment seeks a market rate of return for a fixed income portfolio with low relative volatility of returns. The fund invests in a universe of U.S. and foreign debt securities maturing in five years or less from the date of settlement. It primarily invests in obligations issued or guaranteed by the U.S. and foreign governments, their agencies and instrumentalities, corporate debt obligations, bank obligations, commercial paper, repurchase agreements, money market funds, securities of domestic or foreign issuers denominated in U.S. dollars but not trading in the United States, and obligations of supranational organizations.