Affiliated Managers Group, Inc.
AMG- Exchange
- NYSE
- Industry
- Investment Advice
- SEC CIK
- 0001004434
No open-market purchases or sales by Affiliated Managers Group, Inc. insiders were filed in the last 90 days; 567 institutions reported holding it in 13F filings for Q2 2026, worth $8.53B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.
13F holders, Q3 2025
Institutional positions in Affiliated Managers Group, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 451
- +26 vs. Q2 2025
- Shares held
- 26.5M
- +5.51K (0.0%) vs. Q2 2025
- Total value
- $6.32B
- +$1.11B (+21.2%) vs. Q2 2025
- New holders
- 61
- 141 more added
- Sold out
- 35
- 163 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AMG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 567 | $8.53B |
| Q1 2026 | 548 | $6.88B |
| Q4 2025 | 511 | $7.47B |
| Q3 2025 | 451 | $6.32B |
| Q2 2025 | 432 | $5.28B |
| Q1 2025 | 396 | $4.65B |
| Q4 2024 | 408 | $5.21B |
| Q3 2024 | 422 | $5.04B |
| Q2 2024 | 407 | $4.57B |
| Q1 2024 | 403 | $5.10B |
| Q4 2023 | 386 | $4.77B |
| Q3 2023 | 360 | $4.16B |
| Q2 2023 | 381 | $4.94B |
| Q1 2023 | 388 | $4.92B |
| Q4 2022 | 367 | $5.50B |
| Q3 2022 | 329 | $4.06B |
| Q2 2022 | 311 | $4.33B |
| Q1 2022 | 335 | $5.32B |
| Q4 2021 | 365 | $6.45B |
| Q3 2021 | 335 | $6.04B |
| Q2 2021 | 340 | $6.34B |
| Q1 2021 | 320 | $6.28B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Affiliated Managers Group, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Brown Brothers Harriman & Co | 3,905 | $931.1K | 0.01% | −406−9.4% | Reduced |
| Pictet Asset Management Holding SA | 3,868 | $922.2K | 0.00% | −690−15.1% | Reduced |
| Advisory Services Network, LLC | 3,848 | $917.5K | 0.01% | +301+8.5% | Added |
| Pacer Advisors, Inc. | 3,788 | $903.2K | 0.00% | +3,788 | New |
| Point72 Asset Management, L.P. | 3,779 | $901.0K | 0.00% | −26,021−87.3% | Reduced |
| Federated Hermes, Inc. | 3,667 | $874.3K | 0.00% | −823−18.3% | Reduced |
| Custom Index Systems, LLC | 3,609 | $860.5K | 0.26% | +1,259+53.6% | Added |
| Kendall Capital Management | 3,605 | $859.5K | 0.19% | −250−6.5% | Reduced |
| Kovitz Investment Group Partners, LLC | 3,577 | $852.8K | 0.00% | +457+14.6% | Added |
| US Bancorp | 3,561 | $849.0K | 0.00% | +49+1.4% | Added |
| Welch & Forbes LLC | 3,500 | $834.5K | 0.01% | 00.0% | Unchanged |
| Guinness Asset Management LTD | 3,432 | $819.3K | 0.01% | +236+7.4% | Added |
| Farther Finance Advisors, LLC | 3,327 | $793.2K | 0.01% | +461+16.1% | Added |
| Ethic Inc. | 3,306 | $788.2K | 0.01% | +407+14.0% | Added |
| Truist Financial Corp | 3,203 | $763.7K | 0.00% | +794+33.0% | Added |
| MQS Management LLC | 3,180 | $758.2K | 0.44% | +643+25.3% | Added |
| Rockefeller Capital Management L.P. | 3,176 | $757.3K | 0.00% | +3,176 | New |
| Quadrant Capital Group LLC | 3,174 | $756.8K | 0.02% | +64+2.1% | Added |
| Xponance, Inc. | 3,146 | $750.1K | 0.01% | −32−1.0% | Reduced |
| Cresset Asset Management, LLC | 3,127 | $745.6K | 0.00% | +14+0.4% | Added |
| Landscape Capital Management, L.L.C. | 3,126 | $745.3K | 0.05% | +3,126 | New |
| Engineers Gate Manager LP | 3,104 | $740.1K | 0.01% | −489−13.6% | Reduced |
| Advisor Group Holdings, Inc. | 3,026 | $719.2K | 0.00% | +1,575+108.5% | Added |
| The PNC Financial Services Group, Inc. | 2,999 | $715.1K | 0.00% | +599+25.0% | Added |
| Radnor Capital Management, LLC | 2,970 | $708.1K | 0.11% | 00.0% | Unchanged |
| Legacy Wealth Asset Management, LLC | 2,967 | $707.4K | 0.17% | −897−23.2% | Reduced |
| Oak Thistle LLC | 2,958 | $705.3K | 0.11% | −785−21.0% | Reduced |
| Prudential Financial Inc | 2,907 | $693.1K | 0.00% | −349−10.7% | Reduced |
| Vestcor Inc | 2,883 | $687.0K | 0.02% | +640+28.5% | Added |
| Cerity Partners LLC | 2,794 | $666.0K | 0.00% | −2,941−51.3% | Reduced |
| Gamco Investors, Inc. Et Al | 2,775 | $661.6K | 0.01% | +375+15.6% | Added |
| Stifel Financial Corp | 2,754 | $656.5K | 0.00% | +86+3.2% | Added |
| CSM Advisors, LLC | 2,708 | $646.0K | 0.02% | −1,350−33.3% | Reduced |
| HighTower Advisors, LLC | 2,701 | $644.0K | 0.00% | +194+7.7% | Added |
| Sepio Capital, LP | 2,696 | $642.8K | 0.04% | +8+0.3% | Added |
| Mercer Global Advisors Inc | 2,669 | $636.4K | 0.00% | +361+15.6% | Added |
| Vident Advisory, LLC | 2,667 | $635.9K | 0.01% | −33−1.2% | Reduced |
| Public Employees Retirement Association of Colorado | 2,662 | $635.0K | 0.00% | 00.0% | Unchanged |
| Ritholtz Wealth Management | 2,651 | $632.1K | 0.01% | +1,315+98.4% | Added |
| RBF Capital, LLC | 2,600 | $619.9K | 0.03% | 00.0% | Unchanged |
| FJ Capital Management LLC | 2,557 | $609.7K | 0.07% | +2,557 | New |
| Colony Group, LLC | 2,778 | $608.6K | 0.00% | −116−4.0% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 2,534 | $608.1K | 0.00% | −83−3.2% | Reduced |
| Harbor Advisors LLC | 2,500 | $596.1K | 0.09% | 00.0% | Unchanged |
| Sequoia Financial Advisors, LLC | 2,459 | $586.3K | 0.00% | +820+50.0% | Added |
| Dodge & Cox | 2,400 | $572.2K | 0.00% | −600−20.0% | Reduced |
| AdvisorShares Investments LLC | 2,365 | $563.9K | 0.09% | −30−1.3% | Reduced |
| Coldstream Capital Management Inc | 2,354 | $561.3K | 0.01% | +11+0.5% | Added |
| Empowered Funds, LLC | 2,335 | $556.7K | 0.01% | +2,335 | New |
| Point72 Hong Kong Ltd | 2,287 | $545.3K | 0.03% | +2,187+2,187.0% | Added |
| Gabelli Funds LLC | 2,263 | $539.6K | 0.00% | −120−5.0% | Reduced |
| Schubert & Co | 2,203 | $525.3K | 0.39% | +6+0.3% | Added |
| Squarepoint Ops LLC | 2,185 | $521.0K | 0.00% | −46−2.1% | Reduced |
| Securian Asset Management, Inc | 2,118 | $505.0K | 0.01% | −100−4.5% | Reduced |
| Brevan Howard Capital Management LP | 2,004 | $477.8K | 0.01% | −7,072−77.9% | Reduced |
| Horizon Kinetics Asset Management LLC | 1,978 | $471.6K | 0.01% | −107−5.1% | Reduced |
| South Dakota Investment Council | 1,888 | $450.0K | 0.01% | −300−13.7% | Reduced |
| Susquehanna International Group, LLP | 1,879 | $448.0K | 0.00% | −2,017−51.8% | Reduced |
| Tower Research Capital LLC (TRC) | 1,874 | $446.8K | 0.01% | +1,298+225.3% | Added |
| Hancock Whitney Corp | 1,855 | $442.3K | 0.01% | −13−0.7% | Reduced |
| Glenmede Investment Management, LP | 1,792 | $427.3K | 0.00% | +67+3.9% | Added |
| Greenleaf Trust | 1,775 | $423.2K | 0.00% | −1−0.1% | Reduced |
| Toroso Investments, LLC | 1,731 | $412.7K | 0.00% | +181+11.7% | Added |
| Procyon Private Wealth Partners, LLC | 1,648 | $392.9K | 0.02% | +50+3.1% | Added |
| Dark Forest Capital Management LP | 1,638 | $390.5K | 0.01% | +1,638 | New |
| Callan Family Office, LLC | 1,620 | $386.3K | 0.01% | −93−5.4% | Reduced |
| Jupiter Asset Management Ltd | 1,619 | $386.0K | 0.00% | +1,619 | New |
| Quadrature Capital Ltd | 1,588 | $378.8K | 0.00% | −1,642−50.8% | Reduced |
| Cetera Trust Company, N.A | 1,580 | $376.7K | 0.21% | 00.0% | Unchanged |
| Allegheny Financial Group LTD | 1,510 | $360.0K | 0.07% | −38−2.5% | Reduced |
| Utah Retirement Systems | 1,477 | $352.2K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 1,470 | $350.5K | 0.00% | +32+2.2% | Added |
| Cornerstone Investment Partners, LLC | 1,441 | $343.6K | 0.01% | −578−28.6% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 1,416 | $337.6K | 0.05% | −4,087−74.3% | Reduced |
| Forum Financial Management, LP | 1,385 | $330.2K | 0.00% | +1+0.1% | Added |
| Investment Partners, Ltd. | 1,380 | $329.1K | 0.12% | −100−6.8% | Reduced |
| Maryland State Retirement & Pension System | 1,376 | $328.1K | 0.01% | −191−12.2% | Reduced |
| Dorsey & Whitney Trust CO LLC | 1,374 | $327.6K | 0.02% | −45−3.2% | Reduced |
| Polymer Capital Management (US) LLC | 1,369 | $326.4K | 0.04% | −770−36.0% | Reduced |
| Point72 (DIFC) Ltd | 1,358 | $323.9K | 0.02% | +882+185.3% | Added |
| Swiss Life Asset Management Ltd | 1,346 | $320.9K | 0.00% | +1,346 | New |
| GAMMA Investing LLC | 1,333 | $317.8K | 0.02% | +81+6.5% | Added |
| Cambria Investment Management, L.P. | 1,326 | $316.2K | 0.02% | −55,906−97.7% | Reduced |
| Tolleson Wealth Management, Inc. | 1,319 | $314.5K | 0.05% | 00.0% | Unchanged |
| M&T Bank Corp | 1,278 | $304.7K | 0.00% | −360−22.0% | Reduced |
| Manning & Napier Advisors LLC | 1,240 | $296.0K | 0.00% | +1,240 | New |
| Sheets Smith Wealth Management | 1,227 | $292.6K | 0.03% | 00.0% | Unchanged |
| Quent Capital, LLC | 1,214 | $289.5K | 0.02% | +1+0.1% | Added |
| MML Investors Services, LLC | 1,213 | $289.2K | 0.00% | +120+11.0% | Added |
| ProShare Advisors LLC | 1,208 | $288.0K | 0.00% | −52−4.1% | Reduced |
| United Capital Financial Advisers, LLC | 1,187 | $282.9K | 0.00% | −4−0.3% | Reduced |
| Atlanta Consulting Group Advisors, LLC | 1,150 | $274.2K | 0.07% | 00.0% | Unchanged |
| Bessemer Group Inc | 1,142 | $273.0K | 0.00% | −175−13.3% | Reduced |
| DekaBank Deutsche Girozentrale | 1,143 | $271.0K | 0.00% | 00.0% | Unchanged |
| Cadent Capital Advisors, LLC | 1,134 | $270.4K | 0.07% | −50−4.2% | Reduced |
| RSM US Wealth Management LLC | 1,121 | $267.3K | 0.00% | −152−11.9% | Reduced |
| Bayforest Capital Ltd | 1,121 | $267.3K | 0.13% | +1,121 | New |
| MAI Capital Management | 1,108 | $264.2K | 0.00% | −5−0.4% | Reduced |
| Bank of New Hampshire | 1,104 | $263.2K | 0.06% | 00.0% | Unchanged |
| Checchi Capital Advisers, LLC | 1,081 | $257.7K | 0.02% | +25+2.4% | Added |