Strategy. The Fund invests at least 80% of its total assets in Government National Mortgage Association mortgage-backed securities (GNMA Securities), which are debt securities representing part ownership in a pool of mortgage loans backed by the full faith and credit of the U.S. Government. The Fund invests the balance of its assets primarily in other U.S. Government Obligations, which are defined as U.S. Treasury bills, notes and bonds, and other bonds and mortgage-backed securities issued or guaranteed by the U.S. Government, or by government sponsored enterprises (such as the Federal Home Loan Mortgage Corporation (FHLMC) or Federal National Mortgage Association (FNMA)). However, the Fund may also invest in repurchase agreements collateralized by U.S. Government Obligations or GNMA Securities. The Fund may … Show more… The Fund invests at least 80% of its total assets in Government National Mortgage Association mortgage-backed securities (GNMA Securities), which are debt securities representing part ownership in a pool of mortgage loans backed by the full faith and credit of the U.S. Government. The Fund invests the balance of its assets primarily in other U.S. Government Obligations, which are defined as U.S. Treasury bills, notes and bonds, and other bonds and mortgage-backed securities issued or guaranteed by the U.S. Government, or by government sponsored enterprises (such as the Federal Home Loan Mortgage Corporation (FHLMC) or Federal National Mortgage Association (FNMA)). However, the Fund may also invest in repurchase agreements collateralized by U.S. Government Obligations or GNMA Securities. The Fund may also invest in commercial mortgage-backed, and other mortgage-backed securities that are not guaranteed by the U.S. Government but are rated Aaa by Moodys Investors Service, Inc. (Moodys), or equivalently rated by S&P Global Ratings (S&P), Fitch Ratings Inc. (Fitch), Kroll Bond Rating Agency, LLC (KBRA), or Morningstar DBRS (DBRS). The Fund invests in debt securities of any maturity, and there is no limit on the Funds minimum or maximum average portfolio maturity. To gain exposure to various markets consistent with the investment strategies of the Fund, the Fund may invest in exchange-traded funds (ETFs) and other investment companies, including for example, other open-end or closed-end investment companies, and including investment companies for which the Adviser provides investment management services (affiliated funds). The Fund may use derivative instruments, including interest rate futures, interest rate swaps, and options on futures and swaps, for enhancing return and risk management purposes, such as managing the Funds duration and interest rate exposure. The Fund may also purchase or sell GNMA, FNMA, and FHLMC mortgage-backed securities in the to-be-announced (TBA) market, a forward market in which Agency mortgage-backed securities are traded based on standardized characteristics rather than identified pools. Show less