Under normal circumstances, the Fund invests at least 80% of its assets in investment-grade securities and maintains an effective duration within two years (plus or minus) of the portfolio duration of the securities comprising the Bloomberg U.S. Aggregate Bond Index as calculated by Wellington Management Company LLP (the “Subadviser”), the Fund’s subadviser. Under normal circumstances, at least 80% of the Fund’s net assets (plus the amount of borrowings, if any, for investment purposes) will be invested in bonds, including government and corporate bonds, mortgage-backed and asset-backed securities, non‑U.S. dollar denominated bonds, and U.S. dollar denominated bonds issued by non‑U.S. entities. The Fund’s investments in bonds also may include floating and variable rate loans, and municipal securities. A significant portion of the Fund’s assets may be invested in securities issued by government-sponsored entities such as Freddie Mac, Fannie Mae, and the Federal Home Loan Banks. A significant portion of the Fund’s assets may also be invested in “to be announced” securities, including mortgage dollar roll, when-issued, delayed delivery and forward commitment securities. A “to be announced” transaction is a method of trading mortgage-backed securities where the buyer and seller agree upon general trade parameters such as agency, settlement date, par amount, and price at the time the contract is entered into but the mortgage-backed securities are delivered in the future, generally 30 days later. The Fund generally has a high rate of portfolio turnover as a consequence of investing in “to be announced” securities. The Fund may invest up to 20% of its net assets in below investment grade debt securities (sometimes referred to as “junk bonds”) or, if unrated, of equivalent credit quality as determined by the