Strategy. The Funds overall strategy is to invest in a portfolio generally consisting of U.S. Treasury securities and U.S. government agency securities such that the Funds average modified duration is not less than one year and not more than three years, and related derivative contracts. There can be no assurance that the Funds use of derivative contracts or hybrid instruments will work as intended. Derivative investments made by the Fund are included within the Funds 80% policy (as described below) and are calculated at market value. The Fund buys and sells portfolio securities based primarily on its market outlook and analysis of how securities may perform under different market conditions. The Fund evaluates its investment strategy by comparing the performance and … Show more… The Funds overall strategy is to invest in a portfolio generally consisting of U.S. Treasury securities and U.S. government agency securities such that the Funds average modified duration is not less than one year and not more than three years, and related derivative contracts. There can be no assurance that the Funds use of derivative contracts or hybrid instruments will work as intended. Derivative investments made by the Fund are included within the Funds 80% policy (as described below) and are calculated at market value. The Fund buys and sells portfolio securities based primarily on its market outlook and analysis of how securities may perform under different market conditions. The Fund evaluates its investment strategy by comparing the performance and composition of the Funds portfolio to the performance and composition of the ICE BofA 1-3 Year US Treasury Index, an index composed of U.S. Treasury notes and bonds with maturities greater than or equal to one year and less than three years. U.S. government securities also may be offered on a delayed delivery basis. The Fund will enter into delayed delivery transactions, including when-issued transactions, in order to participate in these offerings or trade these securities. The Fund may also seek to increase its income by lending its portfolio securities. Certain of the government securities in which the Fund invests are not backed by the full faith and credit of the U.S. government, such as those issued by the Federal Home Loan Mortgage Corporation (Freddie Mac), the Federal National Mortgage Association (Fannie Mae), and the Federal Home Loan Bank System. These entities are, however, supported through federal subsidies, loans or other benefits. The Fund may also invest in government securities that are supported by the full faith and credit of the U.S. government, such as those issued by the Government National Mortgage Association (Ginnie Mae). Finally, the Fund may invest in certain government securities that have no explicit financial support, but which are regarded as having implied support because the federal government sponsors their activities. The government mortgage-backed securities in which the Fund may invest are government mortgage-backed securities such as those issued by Ginnie Mae, Fannie Mae and Freddie Mac. The Fund invests in overnight repurchase agreements or affiliated money market funds in order to maintain sufficient cash to pay for daily net redemptions and portfolio transactions. The Fund will invest its assets so that at least 80% of its net assets (plus any borrowings for investment purposes) are invested in U.S. government investments. The Fund will notify shareholders at least 60 days in advance of any change in its investment policy that would enable the Fund to invest, under normal circumstances, less than 80% of its net assets (plus the amount of any borrowings for investment purposes) in U.S. government investments. Show less