| Category | Fund Name | Class | Net Assets ($ M)* | 2025 | 2024 | 2023 |
|---|---|---|---|---|---|---|
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund + | Class A Shares | 613.7 | -5.5 | 12.3 | 13.4 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class A Shares | 613.7 | -3.9 | 11.3 | 12.5 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class A Shares | 613.7 | -5.6 | 12.3 | 13.4 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class A Shares | 613.7 | -9.2 | 12.3 | 13.4 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class A Shares | 613.7 | -7 | 12.1 | 13.1 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class A Shares | 613.7 | -3.8 | 12.3 | 13.4 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc + | Class A Shares | 2500 | -16.3 | 21.9 | 8.5 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc + | Class A Shares | 1100 | -1.9 | 5.1 | 14.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund + | Class A Shares | 1900 | 3.8 | 13.1 | 12.1 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund + | Class A Shares | 4900 | -11.5 | 44.6 | 33 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -13.9 | 43.5 | 31.9 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -7 | 45 | 33.3 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -12.7 | 45 | 33.3 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -5.4 | 45.1 | 33.3 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -10.2 | 44.1 | 32.5 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -13.6 | 44.3 | 32.6 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -9.8 | 44.6 | 33 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -10.5 | 45 | 33.3 |
| Multi-Cap-Growth | Lord Abbett Growth Leaders Fund | Class A Shares | 4900 | -9.6 | 45.1 | 33.4 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -4.4 | 4 | 13.8 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -2.9 | 5 | 14.1 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -2.4 | 5.1 | 14.2 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -4.3 | 4.9 | 14 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -8 | 4.9 | 14.1 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -1.9 | 5.1 | 14.1 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | 1.2 | 4.9 | 14.1 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | 1.6 | 4.9 | 14.1 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund + | Class A Shares | 436 | -3.4 | 30.7 | 10.8 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class A Shares | 1100 | -2.5 | 5.1 | 14.2 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund + | Class A Shares | 384.7 | -6 | 2 | 19.7 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -19.3 | 2.2 | 19.7 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -8.1 | 5 | 19.8 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -7.3 | 0.7 | 19.5 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -2.9 | 0.2 | 19.3 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -8.4 | 0.7 | 19.5 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -8.2 | 2.1 | 19.7 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -11.2 | 4.8 | 19.7 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -2.9 | 5 | 19.8 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -6.7 | 4.8 | 19.8 |
| Small-Cap-Value | Lord Abbett Small-Cap Value Fund | Class A Shares | 384.7 | -3.2 | -39.7 | 18 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund + | Class A Shares | 1200 | -7.3 | 6.8 | 14.9 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -6.7 | 4.2 | 13.8 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -5.6 | 7.2 | 14.9 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -4.5 | 7.5 | 15.1 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -7.7 | 6.3 | 14.8 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -8 | 5.9 | 14.5 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -4.6 | 6.1 | 14.7 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -6.5 | 6.8 | 14.9 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -2.1 | 7.3 | 15 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -5.5 | 7.5 | 15.1 |
| Mid-Cap-Core | Lord Abbett Value Opportunities Fund | Class A Shares | 1200 | -5 | 7.3 | 15 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc + | Class A Shares | 5500 | 3.9 | 10.6 | 8.5 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund + | Class A Shares | 322.2 | 5.7 | -1.6 | 13 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 5.7 | -1.6 | 13 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | -2 | -1.7 | 13.1 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 5.9 | -1.4 | 13.1 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 4.1 | -1.5 | 13 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 5.5 | -1.5 | 13.7 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 3.8 | -1.6 | 13.1 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 7.5 | -1.6 | 12.9 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 7.6 | -1.7 | 12.9 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 5.7 | -1.6 | 13.1 |
| Mid-Cap-Core | Lord Abbett International Opportunities Fund | Class A Shares | 322.2 | 5.4 | -1.4 | 13.1 |
| Multi-Cap-Core | Lord Abbett International Equity Fund + | Class A Shares | 301.4 | 11.3 | 4.9 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class A Shares | 301.4 | -1.3 | 5.1 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class A Shares | 301.4 | 8.2 | 4.9 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class A Shares | 301.4 | 8.9 | 4.8 | 10.4 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund + | Class A Shares | 14.3 | -0.7 | 17.1 | 22.2 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class A Shares | 14.3 | -9.6 | 17.3 | 22.3 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund + | Class A Shares | 35.1 | -11.2 | 50.5 | 33.8 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class A Shares | 35.1 | -17.2 | 51.1 | 34.3 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class A Shares | 35.1 | -1.7 | 50.9 | 34.1 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class A Shares | 35.1 | -12.7 | 51.1 | 34.3 |
| Alternatives | Lord Abbett Dividend Growth Fund + | Class A Shares | 3500 | -1.7 | 16.4 | 14.7 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class F3 Shares | 613.7 | -2.8 | 12.5 | 13.5 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class R2 Shares | 613.7 | -7.3 | 12 | 13.1 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class R6 Shares | 613.7 | -7.1 | 12.5 | 13.5 |
| Small-Cap-Core | Lord Abbett Alpha Strategy Fund | Class I Shares | 613.7 | -8.7 | 12.4 | 13.4 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class C Shares | 1900 | 4 | 11.7 | 12.1 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class C Shares | 2500 | -15 | 21 | 7.7 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class F Shares | 2500 | -7.1 | 22 | 8.6 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class P Shares | 2500 | -16.9 | 21.7 | 8.2 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class R2 Shares | 2500 | -16.9 | 21.5 | 8.1 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class R3 Shares | 2500 | -14.3 | 21.6 | 8.2 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class R4 Shares | 2500 | -7.1 | 21.9 | 8.5 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class R5 Shares | 2500 | -16.8 | 22 | 8.7 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class R6 Shares | 2500 | -20.3 | 22.1 | 8.8 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class I Shares | 2500 | -16.8 | 22 | 8.7 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class R4 Shares | 5500 | -8.9 | 10.5 | 8.6 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class R5 Shares | 5500 | -0.8 | 10.6 | 8.6 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class R6 Shares | 5500 | 3.9 | 10.7 | 8.6 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class F Shares | 1900 | 2.2 | 12.9 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class P Shares | 1900 | 1 | 12.9 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class R2 Shares | 1900 | 2.7 | 12.6 | 12.2 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class R3 Shares | 1900 | -1.5 | 12.7 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class R4 Shares | 1900 | 3.9 | 12.9 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class R5 Shares | 1900 | 2.1 | 13.1 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class R6 Shares | 1900 | 4.2 | 13.2 | 12.2 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class I Shares | 1900 | 1.6 | 13.1 | 12.1 |
| Multi-Cap-Value | Lord Abbett Fundamental Equity Fund | Class F3 Shares | 1900 | 0.8 | 13.2 | 12.3 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class F Shares | 436 | -5.3 | 30.9 | 11 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class P Shares | 436 | -23.2 | 30.5 | 10.6 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class R2 Shares | 436 | -13.4 | 30.3 | 10.5 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class R3 Shares | 436 | -11 | 30.4 | 10.5 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class R4 Shares | 436 | -11.1 | 30.7 | 10.9 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class R5 Shares | 436 | -13.2 | 31.1 | 11.1 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class R6 Shares | 436 | -17.2 | 31.1 | 11.2 |
| Multi-Cap-Value | Lord Abbett International Value Fund + | Class F3 Shares | 370.8 | 7.2 | 4.3 | 11.9 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 12.8 | 4.3 | 11.7 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 13.7 | 4.2 | 11.8 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class R6 Shares | 370.8 | 12.8 | 4.3 | 11.9 |
| Mid-Cap-Value | Lord Abbett Mid Cap Stock Fund Inc | Class P Shares | 1100 | -3.1 | 4.7 | 14 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class C Shares | 436 | -3.5 | 29.7 | 10 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class I Shares | 436 | -13.3 | 31 | 11.1 |
| Small-Cap-Growth | Lord Abbett Developing Growth Fund Inc | Class F3 Shares | 2500 | -15.4 | 22.1 | 8.8 |
| Multi-Cap-Growth | Lord Abbett Growth Opportunities Fund | Class F3 Shares | 436 | 0.9 | 31.2 | 11.2 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class F3 Shares | 5500 | -1.3 | 10.7 | 8.6 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 11.3 | 4.2 | 11.7 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 11.9 | 4.3 | 11.8 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 8.3 | 4.2 | 11.9 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 11 | 4.3 | 11.7 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 11.4 | 4.3 | 11.7 |
| Multi-Cap-Value | Lord Abbett International Value Fund | Class F3 Shares | 370.8 | 10.1 | 4.2 | 11.7 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class C Shares | 5500 | 0.4 | 10.5 | 8.6 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class F Shares | 5500 | -1.2 | 10.5 | 8.6 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class I Shares | 5500 | -0.8 | 10.5 | 8.6 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class P Shares | 5500 | 6 | 10.5 | 8.5 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class R2 Shares | 5500 | 3.8 | 10.5 | 8.5 |
| Equity-Income | Lord Abbett Affiliated Fund, Inc | Class R3 Shares | 5500 | 1.4 | 10.5 | 8.6 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class C Shares | 301.4 | 8.1 | 5.1 | 10.9 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class F Shares | 301.4 | 11.3 | 4.8 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class Y Shares | 301.4 | 11.4 | 5 | 10.3 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class P Shares | 301.4 | 10.6 | 4.9 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class R4 Shares | 301.4 | 9 | 4.8 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class R5 Shares | 301.4 | 7.5 | 4.9 | 10.4 |
| Multi-Cap-Core | Lord Abbett International Equity Fund | Class R6 Shares | 301.4 | 10.5 | 5 | 10.5 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class C Shares | 14.3 | -0.1 | 16.6 | 22.1 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class F Shares | 14.3 | -4.4 | 17.1 | 22.3 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class F3 Shares | 14.3 | 1.9 | 17.3 | 22.3 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class I Shares | 14.3 | 0.2 | 17.1 | 22.3 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class R Shares | 14.3 | 1.8 | 17.1 | 22.2 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class R4 Shares | 14.3 | -1.3 | 17.1 | 23.2 |
| Multi-Cap-Core | Lord Abbett Global Equity Research Fund | Class R5 Shares | 14.3 | 0.5 | 17.1 | 22.3 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class C Shares | 35.1 | -10 | 49.4 | 32.8 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class F Shares | 35.1 | -12.8 | 50.9 | 34.1 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class R3 Shares | 35.1 | -22.8 | 50.1 | 33.5 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class R4 Shares | 35.1 | -5.8 | 50.5 | 33.8 |
| Multi-Cap-Growth | Lord Abbett Focused Growth Fund | Class R5 Shares | 35.1 | -1.7 | 50.9 | 34.2 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class R6 Shares | 3500 | -3.3 | 16.5 | 14.8 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class R4 Shares | 3500 | -2 | 16.4 | 14.7 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class R5 Shares | 3500 | -1.7 | 16.5 | 14.8 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class F3 Shares | 3500 | -1.7 | 16.6 | 14.8 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class C Shares | 3500 | -3.4 | 16.2 | 14.7 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class F Shares | 3500 | 3 | 16.6 | 14.9 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class I Shares | 3500 | -5.5 | 16.5 | 14.8 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class P Shares | 3500 | 2.6 | 16.5 | 14.7 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class R2 Shares | 3500 | 2.6 | 16.5 | 14.7 |
| Alternatives | Lord Abbett Dividend Growth Fund | Class R3 Shares | 3500 | -0.6 | 16.3 | 14.7 |
* Net Assets include for all classes