Strategy. To pursue its investment objective, the Fund will invest, under normal circumstances, at least 80% of its net assets plus borrowings for investment purposes in a diversified portfolio of securitized obligations of any kind (including asset-backed securities, commercial mortgage-backed securities, collateralized mortgage obligations and collateralized loan obligations (CLOs)). The Fund will invest in securities that are investment grade (i.e., rated at the time of purchase in one of the four highest rating categories by a nationally recognized statistical rating organization, or determined by the portfolio manager to be of comparable quality). As part of its investment strategy, the Fund may engage in mortgage dollar roll transactions, under which the Fund sells a mortgage-backed security to a dealer and simultaneously contracts … Show more… To pursue its investment objective, the Fund will invest, under normal circumstances, at least 80% of its net assets plus borrowings for investment purposes in a diversified portfolio of securitized obligations of any kind (including asset-backed securities, commercial mortgage-backed securities, collateralized mortgage obligations and collateralized loan obligations (CLOs)). The Fund will invest in securities that are investment grade (i.e., rated at the time of purchase in one of the four highest rating categories by a nationally recognized statistical rating organization, or determined by the portfolio manager to be of comparable quality). As part of its investment strategy, the Fund may engage in mortgage dollar roll transactions, under which the Fund sells a mortgage-backed security to a dealer and simultaneously contracts to repurchase a security that is substantially similar in type, coupon and maturity, on a specified future date. Such investments will not exceed 25% of the Funds total assets. Mortgage dollar roll transactions may create investment leverage. The Fund also will invest in securities issued or guaranteed by the U.S. government or its agencies and instrumentalities (such as, for example, the Federal National Mortgage Association (Fannie Mae), the Federal Home Loan Mortgage Corporation (Freddie Mac) and the Government National Mortgage Association (Ginnie Mae)); corporate debt securities, including corporate bonds, notes and debentures; preferred stock; and debt securities that are sold in private placement transactions between their issuers and their purchasers and that are neither listed on an exchange or traded over the counter. In managing the portfolio, the portfolio manager uses a top down investment management approach focusing on interest rate risk, allocation among sectors, credit risk, and individual securities selection. The portfolio manager focuses on macro trends in the economy to establish a duration target that reflects the outlook for the future direction of interest rates. For yield curve management, in addition to the trend in interest rates, other factors such as future inflation expectations, supply factors, and future interest rate expectations are considered. Sector weightings are driven by a combination of the portfolio managers macro view on interest rates and volatility as well as relative spread analysis (a comparison of current and historical valuation relationships between various sectors). Utilizing fundamental analysis the portfolio manager then selects individual securities consistent with the target by looking for the best relative values within particular sectors. The analysis includes an attempt to understand the structure and embedded features of potential securities. Features that are analyzed include puts, calls, sinking fund requirements (scheduled early retirements of the specific debt instrument), prepayment and extension risk, and individual company financial data for potential corporate holdings. Scenario analysis is the primary tool employed for these assessments. The Funds average duration is expected to be within 1.5 years of the duration of the Bloomberg U.S. Mortgage Backed Securities Index. The portfolio manager may consider selling a security owned by the Fund to reduce exposure to a particular sector, if the portfolio manager sees a deterioration in the underlying fundamentals of an issuer or if the actions of the issuer violate the investment thesis of owning the security (or, in another words, the original reasoning for purchasing the security), when the portfolio managers finds other attractive securities that the portfolio manager believes are less expensive and offer relatively greater income or growth potential, and in response to macro level adjustments to duration and yield curve contributions (which are changes made to portfolio duration or yield curve positioning due to changes in the portfolio managers macroeconomic outlook). The Fund may invest in certain types of derivative instruments for hedging and investment purposes. Although the Fund may invest in derivatives of any kind, the Fund currently expects to invest in futures contracts to gain efficient investment exposures as an alternative to cash investments or to hedge against portfolio exposures, and credit default swaps, interest rate swaps, inverse floater securities, and interest-only and principal-only securities to gain indirect exposure to interest rates, issuers, currencies, or market sectors, or to hedge against portfolio exposures. Show less