FIXED INCOME 2Q21 CORE FIXED INCOME FUND LOWER EXPENSES - CLASS A AVERAGE ANNUAL TOTAL RETURNS (%) AS OF 06/30/2021 1† Fund Expense Ratio 0.60% CLASS A SHARES YTD 1 YEAR 3 YEARS 5 YEARS 10 YEARS EXPENSE RATIO1 Category Average2 0.78% Net Asset Value -0.79 1.68 5.37 3.02 3.37 (without sales charge) GOAL 0.60% Maximum Offering Price -3.01 -0.65 4.58 2.54 3.14 The Fund seeks to deliver current income (with 2.25% sales charge) and the opportunity for capital appreciation by investing primarily in U.S. investment GROWTH OF $10,000 grade corporate, government, and $30,000 mortgage- and asset- backed securities. $26,882 PORTFOLIO CHARACTERISTICS $20,000 Average Effective Duration: 6.2 Years Average Life: 6.6 Years Number of Issues: 349 $10,000 FUND SYMBOLS/CUSIPS $0 Class A: LCRAX 543916878 08/31/2000 05/30/2007 02/27/2014 12/31/2020 Class C: LCRCX 543916852 Based on a hypothetical Class A Share investment of $10,000 on 08/31/2000, at net asset value and includes the reinvestment of all distributions. Data as of 12/31/2020. Class F: LCRFX 543916431 CALENDAR YEAR TOTAL RETURNS AT NAV (%) Class F3: LCROX 54401E259 Class I: LCRYX 543916803 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Class R2: LCRQX 543916423 NAV 7.60 5.84 -2.28 6.13 -0.54 2.71 3.25 -0.43 7.83 7.92 Class R3: LCRRX 543916415 Reflects the percent change in net asset value (NAV) of Class A shares and includes the reinvestment of all distributions. Performance is shown for Class R4: LCRSX 54401E812 each calendar year. Performance of Class A shares with sales charge reflects the reinvestment of all distributions and includes initial maximum sales Class R5: LCRTX 54401E796 charge. Certain purchases of Class A shares without a sales charge are subject to a contingent deferred sales charge (CDSC). The CDSC is not Class R6: LCRVX 54401E788 reflected in the performance shown. Returns for less than one year are not annualized. Instances of high double-digit returns were achieved primarily during favorable market conditions and may not be sustainable over time. Not all share classes are available to all investors. Please Performance data quoted reflect past performance and are no guarantee of future results. Current performance may be see prospectus for more information. higher or lower than the performance quoted. The investment return and principal value of an investment in the Fund will fluctuate so that shares, on any given day or when redeemed, may be worth more or less than their original cost. You can obtain performance data current to the most recent month-end by calling Lord Abbett at 888-522-2388 or referring to lordabbett.com. *Among 53 qualifying fund families. Based on net total return of the one-year period ending 12/31/2020. Barron's Top Fund Families of 2020, February 19, 2021, Lord Abbett Funds ranked 46 out of 53, 3 out of 50, 1 out of 44 mutual fund families within the taxable bond category for the 1-, 5- and 10- year periods ending 12/31/2020, respectively. Barron's Top Fund Families, February 14, 2020, Lord Abbett Funds ranked 5 out of 55, 3 out of 52, 2 out of 45 mutual fund families within the taxable bond category for the 1-, 5- and 10- year periods ending 12/31/2019, respectively. Barron's Best Mutual Fund Families, March 11, 2019, Lord Abbett Funds ranked 21 out of 57, 3 out of 55, 3 out of 49 mutual fund families within the taxable bond category for the 1-, 5- and 10- year periods ending 12/31/2018, respectively. Barron's Best Mutual Fund Families, March 10, 2018, Lord Abbett Funds ranked 3 out of 59, 1 out of 54, and 1 out of 50 mutual fund families within the taxable bond category for the 1-, 5- and 10- year periods ending 12/31/2017, respectively. Barron's Best Mutual Fund Families, February 11, 2017, Lord Abbett Funds ranked #1 in the Taxable Bond Category among 61 fund families based on the net total return of the one−year period ending 12/31/2016, respectively. Barron's Best Mutual Fund Families, February 6, 2016, #21 in the Taxable Bond Category among 67 fund families based on the net total return of the one-year period ending 12/31/2015. Barron's Best Mutual Fund Families, February 7, 2015, #1 in the Taxable Bond Category among 65 fund families. Based on the net total return of the one-year period ending 12/31/2014. Barron's Best Mutual Fund Families, February 8, 2014, #3 in the Taxable Bond Category among 64 fund families. Based on the net total return of the one-year period ending 12/31/2013. Barron's Best Mutual Fund Families, February 11, 2013, #2 in the Taxable Bond Category among 62 fund families. Based on the net total return of the one-year period ending 12/31/2012. Barron's Best Mutual Fund Families, February 6, 2012, #4 in the Taxable Bond Category among 58 fund families. Based on the net total return of the one year period ending 12/31/2011. The Core Fixed Income Fund A share rankings within the Lipper Core Bond Funds Average as of 06/30/2021 for the one-year time period was 41% (201/500); five-year, 69% (286/416); and 10-year, 62% (195/315). Source: Lipper Analytical Services. Lipper Funds Average ranking reflect all share classes within the category and are based on total return and do not reflect the effect of sales charges. 1Reflects expenses for the Fund’s fiscal year end and is subject to change. Fund expenses may fluctuate with market volatility. A substantial reduction in Fund assets (since its most recently completed fiscal year), whether caused by market conditions or significant redemptions or both, will likely cause total operating expenses (as a percentage of Fund assets) to become higher than those shown. 2Reflects the average net expenses of Class A shares of all funds within the Lipper Core Bond Funds Category based on Lipper data available. A Note about Risk: The Fund is subject to the general risks associated with investing in fixed income securities, including market, credit, liquidity, and interest rate risk. The value of an investment in the Fund will change as interest rates fluctuate in response to market movements. When interest rates rise, the prices of debt securities are likely to decline, and when interest rates fall, the prices of debt securities tend to rise. The Fund may invest in Treasury Inflation Protected Securities and other inflation-indexed securities, which are subject to greater inflation rate and interest rate volatility. The Fund may invest in foreign or emerging market securities, which may be adversely affected by economic, political, or regulatory factors and subject to currency volatility and greater liquidity risk. The Fund may invest in derivatives, which are subject to greater liquidity, leverage, and counterparty risk. These factors can affect Fund performance The Fund's portfolio is actively managed and is subject to change. NOT FDIC INSURED - NO BANK GUARANTEE - MAY LOSE VALUE CORE FIXED INCOME FUND 2Q21 INVESTMENT TEAM TEN LARGEST HOLDINGS Team Leader(s): United States Treasury Note/Bond 9.8% United States Treasury Note/Bond 3.1% Kewjin Yuoh, Partner United States Treasury Note/Bond 9.4% United States Treasury Note/Bond 2.9% 27 Years Industry Experience United States Treasury Bill 7.9% 30-YR UMBS-TBA PROD JUL 2.3% Andrew H. O'Brien, CFA, Partner United States Treasury Bill 6.4% 30-YR GNMA II-TBA PROD JUL 2.0% 23 Years Industry Experience 30-YR UMBS-TBA PROD JUL 3.1% 30-YR UMBS-TBA PROD JUL 1.9% Robert A. Lee, Partner & Co-Head Holdings are for informational purposes only and are not a recommendation to buy, sell, or hold any security. 30 Years Industry Experience PORTFOLIO BREAKDOWN CREDIT QUALITY DISTRIBUTION U.S. Government Related 42.8% ■ U.S. Treasury 39.5% Adam C. Castle, CFA ■ Corporates 26.2% Agency 9.7% 13 Years Industry Experience ■ AAA 15.5% ABS 12.4% ■ AA 4.1% Leah G. Traub, Ph.D., Partner MBS 12.1% ■ A 7.0% 20 Years Industry Experience CLO 7.5% ■ BBB 19.3% CMBS 5.3% ■ <BBB 4.4% Harris Trifon Sovereign 0.8% ■ Not Rated 0.5% 21 Years Industry Experience Bank Loans 0.4% Ratings (other than U.S. Treasury securities or securities issued or Other 0.8% backed by U.S. agencies) provided by Standard & Poor's, Moody's, Supported By: and Fitch. For certain securities that are not rated by any of these three Cash -8.3% 65 Investment Professionals agencies, credit ratings from other agencies may be used. Where the 16 Years Avg. Industry Experience Allocations are reported as of the date a security transaction is initiated; rating agencies rate a security differently, Lord Abbett uses the median, however, certain transactions may not settle until several days later. but if there are only two ratings, the lower rating is used. Ratings range Accordingly, cash may appear as a negative allocation as a result of from AAA (highest) to D (lowest). Bonds rated BBB or above are FUND BASICS forward-settling instruments such as currency forwards, certain considered investment grade. Credit ratings BB and below are lower- mortgage-backed securities, and treasury futures. "Other" may include rated securities (junk bonds). High-yielding, non-investment-grade 3 Total Net Assets ($B): $2.0 municipal bonds and non-index holdings.