Strategy. The fund normally invests at least 80% of its net assets (plus any borrowings for investment purposes) in income-producing securities, which may include, but are not limited to, U.S. government and agency obligations, mortgage- and asset-backed securities (including commercial mortgage-backed securities), corporate bonds, foreign bonds, and Treasury Inflation Protected Securities. Any derivatives that provide exposure to the investment focus suggested by the funds name, or to one or more market risk factors associated with the investment focus suggested by the funds name, are counted (as applicable) toward compliance with the funds 80% investment policy. Over the long term, the fund seeks to achieve its objective by investing primarily in income-producing securities that possess what the fund believes are favorable total … Show more… The fund normally invests at least 80% of its net assets (plus any borrowings for investment purposes) in income-producing securities, which may include, but are not limited to, U.S. government and agency obligations, mortgage- and asset-backed securities (including commercial mortgage-backed securities), corporate bonds, foreign bonds, and Treasury Inflation Protected Securities. Any derivatives that provide exposure to the investment focus suggested by the funds name, or to one or more market risk factors associated with the investment focus suggested by the funds name, are counted (as applicable) toward compliance with the funds 80% investment policy. Over the long term, the fund seeks to achieve its objective by investing primarily in income-producing securities that possess what the fund believes are favorable total return (income plus increases in principal value) characteristics. Eighty percent (80%) of the debt securities purchased by the fund are rated investment grade (i.e., rated in one of the four highest rating categories) by each of the credit rating agencies (S&P Global Ratings, Moodys, and Fitch) that have assigned a rating to the security or, if unrated, deemed by the adviser to be of investment-grade quality. Up to 15% of the funds net assets may be invested in split-rated securities, which are securities that have been rated investment grade by at least one credit rating agency but below investment grade by another credit rating agency. The fund may maintain a net exposure of up to 5% of its net assets in instruments (through direct holdings and derivatives) that have received below investment-grade ratings from each of the credit rating agencies that have assigned ratings to the instruments or, if unrated, deemed by the adviser to be below investment-grade quality (including high yield or junk bonds). The fund may invest up to 20% of its net assets in non-U.S. dollar-denominated foreign debt securities (including securities of issuers in emerging markets) and take currency positions to hedge this exposure as well as to capture appreciation from favorable currency changes. The fund has considerable flexibility in seeking high income. There are no maturity restrictions so the fund can purchase long-term bonds, which tend to have higher yields than shorter-term bonds. In addition, when there is a large yield difference between the various quality levels, the fund may move down the credit scale and purchase lower-rated bonds with higher yields. When the difference is small or the outlook warrants, the fund may concentrate investments in higher-rated issues. The fund may use a variety of derivatives, such as futures, forwards, and swaps for a number of purposes, such as for exposure or hedging. Specifically, the fund uses interest rate futures, interest rate swaps, interest rate swaptions, currency options, inflation swaps, forward currency exchange contracts, credit default swap indexes (CDX), and mortgage-backed securities on a delayed delivery or forward commitment basis through the to-be-announced (TBA) market as a means of adjusting the funds duration and gaining exposure to investment-grade bonds. CDXs are primarily used to hedge the portfolios overall credit risk or to efficiently gain exposure to certain sectors or asset classes (such as high yield bonds). Interest rate futures and interest rate swaps are primarily used to manage the funds exposure to interest rate changes and limit overall volatility by adjusting the portfolios duration and extending or shortening the overall maturity of the fund. Interest rate swaptions would typically be used to manage the funds exposure to interest rate changes or to adjust portfolio duration. Currency options are primarily used in an effort to take advantage of currencies that are expected to appreciate in value. Inflation swaps which are tied to a designated inflation index such as the Consumer Price Index (CPI) would typically be used to manage the funds inflation risk. Forward currency exchange contracts may be used to limit overall volatility by protecting the funds non-U.S. dollar-denominated holdings from adverse currency movements relative to the U.S. dollar or to generate returns by gaining long or short exposure to certain currencies expected to increase or decrease in value relative to other currencies. The fund may also purchase or sell mortgage-backed securities on a delayed delivery or forward commitment basis through the to-be-announced (TBA) market. With TBA transactions, the particular securities to be delivered are not identified at the trade date, but the delivered securities must meet specified terms and standards. The fund will generally enter into TBA transactions with the intention of taking possession of the underlying mortgage-backed securities. However, in an effort to obtain underlying mortgage-backed securities on more preferable terms or to enhance returns, the fund may extend the settlement by entering into dollar roll transactions in which the fund sells mortgage-backed securities to a dealer and simultaneously agrees to purchase substantially similar securities in the future at a predetermined price. The fund also expects to engage in short sales of TBA mortgages, including short sales on TBA mortgages the fund does not own, to potentially enhance returns or manage risk. Show less