Fidelity Mortgage Securities Fund

The Fidelity Mortgage Securities Fund typically allocates a minimum of 80% of its assets to investment-grade mortgage-backed securities and their corresponding repurchase agreements, which are classified as having medium to high credit quality. Additionally, the fund invests in U.S. government debt instruments and related financial products. It specifically includes government securities issued by entities authorized or supported by Congress, making it clear that these particular holdings are not directly issued or guaranteed by the U.S. Treasury.