| Investment Objective: |
Under normal circumstances, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in U.S. Treasury bills. Under normal circumstances, the Fund expects to maintain a dollar-weighted average portfolio maturity of approximately 90 days or less although the Fund's dollar-weighted average portfolio maturity may modestly exceed 90 days from time to time due to U.S. Treasury auction schedules, settlement timing, weekends, holidays, market conventions, fund flows, or other portfolio management considerations. U.S. Treasury bills are securities with maturities of one year or less issued by the U.S. Department of the Treasury and backed by the full faith and credit of the U.S. Government. U.S. Treasury bills are sold at a discount to their face value, do not pay periodic interest, and mature at face value. The Fund may invest up to 20% of its total assets in other instruments intended to help the Fund pursue its investment objective, manage liquidity, facilitate creations and redemptions, reduce transaction costs, manage collateral, or seek additional income. |