Strategy. Under normal conditions, the Fund pursues its investment objective by investing at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in various types of short duration debt (or fixed income) securities and derivative instruments that are intended to provide economic exposure to such securities. Under normal conditions, the Fund invests substantially all of its assets in debt securities rated investment grade at the time of purchase or determined by Lord Abbett to be of comparable quality. However, the Fund may at times hold below investment grade securities (commonly referred to as high-yield or junk bonds) if the Fund purchased securities that were considered investment grade at their time of purchase and such securities … Show more… Under normal conditions, the Fund pursues its investment objective by investing at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in various types of short duration debt (or fixed income) securities and derivative instruments that are intended to provide economic exposure to such securities. Under normal conditions, the Fund invests substantially all of its assets in debt securities rated investment grade at the time of purchase or determined by Lord Abbett to be of comparable quality. However, the Fund may at times hold below investment grade securities (commonly referred to as high-yield or junk bonds) if the Fund purchased securities that were considered investment grade at their time of purchase and such securities subsequently are downgraded. The Fund may invest in: corporate debt securities of U.S. issuers; corporate debt securities of non-U.S. (including emerging market) issuers that are denominated in U.S. dollars; mortgage-backed, mortgage-related and other asset-backed securities, including privately issued mortgage-related securities and commercial mortgage-backed securities (CMBS); securities issued or guaranteed by the U.S. Government, its agencies and instrumentalities; debt securities issued or guaranteed by non-U.S. sovereign governments and their agencies, authorities, political subdivisions, or instrumentalities; loans, including bridge loans, novations, assignments, and participations; and structured securities and other hybrid instruments, including collateralized loan obligations (CLOs). The Fund will not invest more than 25% of its total assets in any industry; however, this limitation does not apply to mortgage-backed securities, privately issued mortgage-related securities, or securities issued by the U.S. Government, its agencies and instrumentalities. The Fund seeks to manage interest rate risk through its management of the average duration of the securities it holds in its portfolio. Under normal conditions, the Fund will maintain its average dollar-weighted duration range between one and three years. Subject to the foregoing, the Fund does not have any maturity or duration restrictions and may invest in securities of any maturity or duration. The duration of a security takes into account the pattern of all expected payments of interest and principal on the security over time, including how these payments are affected by changes in interest rates. The Fund may use derivatives to hedge against risk or to gain investment exposure. Currently, the Fund expects to invest in derivatives consisting principally of futures, forwards, options, and swaps. The Fund may use derivatives to seek to enhance returns, to attempt to hedge some of its investment risk, to manage portfolio duration, as a substitute for holding the underlying asset on which the derivative instrument is based, or for cash management purposes. For example, the Fund may invest in or sell short U.S. Treasury futures, securities index futures, other futures, and/or currency forwards to adjust the Funds exposure to the direction of interest rates, or for other portfolio management reasons. The market value of derivatives providing economic exposure substantially similar to the securities referenced in the Funds 80% policy, as described above, will be counted for purposes of measuring the Funds compliance with its 80% policy. The portfolio management team buys and sells securities using a relative value-oriented investment process, meaning the portfolio management team generally seeks more investment exposure to securities believed to be undervalued and less investment exposure to securities believed to be overvalued. The portfolio management team combines top-down and bottom-up analysis to construct its portfolio. The portfolio management team uses a blend of fundamental research and quantitative tools to evaluate global economic conditions, opportunities, and risks across different segments of the fixed income market. The portfolio management team may actively rotate sector exposure based on its assessment of relative value. The Fund may engage in active and frequent trading of its portfolio securities. The Fund may sell a security when the Fund believes the security is less likely to benefit from the current market and economic environment, or shows signs of deteriorating fundamentals, among other reasons. The Fund may deviate from the investment strategy described above for temporary defensive purposes. The Fund may miss certain investment opportunities if defensive strategies are used and thus may not achieve its investment objective. Show less