Strategy. The fund invests in high-yield corporate bonds and other debt securities with an emphasis on securities that are rated below investment-grade. A high-yield security, or junk bond, is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality. Under normal market conditions, the portfolio managers will maintain at least 80% of the funds net assets in high-yield corporate bonds and other debt instruments (including income-producing convertible and preferred securities, as well as loan participations and loan assignments). The remaining assets may be invested in common stocks or other equity-related securities. The fund may invest in new issuances of high yield securities, … Show more… The fund invests in high-yield corporate bonds and other debt securities with an emphasis on securities that are rated below investment-grade. A high-yield security, or junk bond, is one that has been rated below the four highest categories used by a nationally recognized statistical rating organization, or determined by the investment advisor to be of similar quality. Under normal market conditions, the portfolio managers will maintain at least 80% of the funds net assets in high-yield corporate bonds and other debt instruments (including income-producing convertible and preferred securities, as well as loan participations and loan assignments). The remaining assets may be invested in common stocks or other equity-related securities. The fund may invest in new issuances of high yield securities, distressed securities and restricted or illiquid securities, including Rule 144A securities. Convertible securities in which the fund may invest include contingent convertible securities (sometimes referred to as CoCos or Additional Tier 1 Instruments). A CoCo is a fixed-income instrument that may be converted into or exchanged for a prescribed amount of common stock or other security of the same or a different issuer or cash within a particular period of time at a specified price or formula. The value of CoCos tends to decline as interest rates rise and, because of the conversion feature, tends to vary with fluctuations in the market value of the underlying securities. Up to 40% of the funds total assets may be invested in fixed-income obligations of foreign issuers. Under normal market conditions, the fund may invest up to 20% of its assets in short-term money market instruments and U.S. government securities. The fund has no average maturity limitations, but it typically invests in intermediate-term and long-term debt securities. The fund also may invest in derivative instruments such as options, futures contracts, options on futures contracts, and swaps (including credit default swaps), or in mortgage- or asset-backed securities, provided that such investments are in keeping with the funds investment objective. The fund may also engage in securities lending and invest its collateral in eligible securities. The portfolio managers follow a systematic process that utilizes data and technology to identify diversified sources of return. The approach uses a disciplined, model-driven investment process that is designed to take advantage of inefficiencies in the high yield bond market and deliver attractive performance through security selection. The portfolio managers use quantitative models and tools to evaluate securities based on a number of factors, such as a bonds spread, its price, the issuers equity momentum, and the issuers profitability, to construct a portfolio that is diversified and has balanced factor exposures. The portfolio managers then review the output of the quantitative model and, if necessary, make adjustments based on situations such as extraordinary economic events, corporate developments, or liquidity issues. Show less