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 2021
Institutional positions in Affiliated Managers Group, Inc. as of Sep 30, 2021. 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
- 335
- −1 vs. Q2 2021
- Shares held
- 40.0M
- −1.11M (−2.7%) vs. Q2 2021
- Total value
- $6.04B
- −$296.0M (−4.7%) vs. Q2 2021
- New holders
- 36
- 90 more added
- Sold out
- 37
- 141 more reduced
4 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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 2021
Shares, value and share of portfolio for each institution holding Affiliated Managers Group, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Arizona State Retirement System | 11,341 | $1.71M | 0.01% | −245−2.1% | Reduced |
| Nisa Investment Advisors, LLC | 11,485 | $1.74M | 0.01% | 00.0% | Unchanged |
| Wellington Management Group LLP | 11,515 | $1.74M | 0.00% | +6,742+141.3% | Added |
| SEI Investments Co | 12,279 | $1.78M | 0.00% | −6,824−35.7% | Reduced |
| South Dakota Investment Council | 12,665 | $1.91M | 0.03% | 00.0% | Unchanged |
| Prudential Financial Inc | 11,949 | $1.92M | 0.00% | −50,388−80.8% | Reduced |
| Sepio Capital, LP | 12,989 | $1.96M | 0.16% | −444−3.3% | Reduced |
| Vident Investment Advisory, LLC | 13,166 | $1.99M | 0.06% | −2,671−16.9% | Reduced |
| HRT Financial LP | 13,578 | $2.05M | 0.01% | +6,605+94.7% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,613 | $2.06M | 0.02% | −258−1.9% | Reduced |
| Capitolis Advisors LLC | 13,125 | $2.09M | 0.02% | +13,125 | New |
| Westpac Banking Corp | 13,870 | $2.10M | 0.02% | −25,784−65.0% | Reduced |
| Oregon Public Employees Retirement Fund | 14,042 | $2.12M | 0.02% | −493−3.4% | Reduced |
| Treasurer of the State of North Carolina | 14,793 | $2.23M | 0.01% | +349+2.4% | Added |
| Blair William & Co | 15,003 | $2.27M | 0.01% | −27−0.2% | Reduced |
| Long Road Investment Counsel, LLC | 15,045 | $2.27M | 1.00% | 00.0% | Unchanged |
| Henshaw Capital LLC | 15,137 | $2.29M | 0.14% | +10.0% | Added |
| Two Sigma Advisers, LP | 15,200 | $2.30M | 0.01% | −7,300−32.4% | Reduced |
| Alaska Permanent Fund Corp | 15,300 | $2.31M | 0.05% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 15,309 | $2.31M | 0.02% | +8,033+110.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 15,606 | $2.36M | 0.01% | −17,647−53.1% | Reduced |
| Dorsey Wright & Associates | 15,999 | $2.42M | 0.53% | −248−1.5% | Reduced |
| Poehling Capital Management, LLC | 16,281 | $2.46M | 0.83% | −55−0.3% | Reduced |
| Bridgewater Associates, LP | 16,421 | $2.48M | 0.01% | +3,506+27.1% | Added |
| Allianz Asset Management GmbH | 17,458 | $2.64M | 0.00% | −20,933−54.5% | Reduced |
| Royal Bank of Canada | 18,094 | $2.73M | 0.00% | −27,670−60.5% | Reduced |
| Twin Tree Management, LP | 18,281 | $2.76M | 0.08% | +17,355+1,874.2% | Added |
| Verdence Capital Advisors LLC | 18,851 | $2.85M | 0.37% | −107−0.6% | Reduced |
| Rafferty Asset Management, LLC | 19,723 | $2.98M | 0.02% | −3,781−16.1% | Reduced |
| MetLife Investment Management | 19,796 | $2.99M | 0.03% | −1,009−4.8% | Reduced |
| Great West Life Assurance Co | 20,228 | $3.08M | 0.01% | +3,151+18.5% | Added |
| Comerica Bank | 18,972 | $3.14M | 0.02% | −4,132−17.9% | Reduced |
| Price T Rowe Associates Inc | 20,952 | $3.17M | 0.00% | +628+3.1% | Added |
| Ilmarinen Mutual Pension Insurance Co | 21,705 | $3.28M | 0.04% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 24,166 | $3.65M | 0.01% | −717−2.9% | Reduced |
| BNP Paribas Arbitrage, SA | 26,442 | $4.00M | 0.01% | +9,509+56.2% | Added |
| Public Employees Retirement System of Ohio | 26,846 | $4.06M | 0.01% | +2,356+9.6% | Added |
| Pinebridge Investments, L.P. | 26,934 | $4.07M | 0.05% | −3,115−10.4% | Reduced |
| Citigroup Inc | 28,379 | $4.29M | 0.00% | −7,820−21.6% | Reduced |
| Oppenheimer Asset Management Inc. | 28,477 | $4.30M | 0.06% | +1,140+4.2% | Added |
| American Century Companies Inc | 28,668 | $4.33M | 0.00% | −62,717−68.6% | Reduced |
| Stifel Financial Corp | 28,962 | $4.38M | 0.01% | −210−0.7% | Reduced |
| Prana Capital Management, LP | 28,961 | $4.38M | 0.39% | +28,961 | New |
| Texas Permanent School Fund | 30,481 | $4.61M | 0.06% | −548−1.8% | Reduced |
| Formula Growth Ltd | 31,000 | $4.68M | 0.68% | 00.0% | Unchanged |
| Bank of Montreal | 30,348 | $4.74M | 0.00% | +21,580+246.1% | Added |
| Calamos Advisors LLC | 35,430 | $5.35M | 0.03% | 00.0% | Unchanged |
| Amalgamated Bank | 35,521 | $5.37M | 0.05% | −3,278−8.4% | Reduced |
| Mutual of America Capital Management LLC | 36,347 | $5.49M | 0.05% | −831−2.2% | Reduced |
| First Republic Investment Management, Inc. | 36,610 | $5.53M | 0.01% | +556+1.5% | Added |
| Nordea Investment Management AB | 38,116 | $5.90M | 0.01% | −106−0.3% | Reduced |
| State of Tennessee, Treasury Department | 42,314 | $6.39M | 0.02% | −25,362−37.5% | Reduced |
| Acadian Asset Management LLC | 42,909 | $6.48M | 0.02% | +37,187+649.9% | Added |
| Storebrand Asset Management AS | 43,657 | $6.60M | 0.03% | 00.0% | Unchanged |
| LSV Asset Management | 43,721 | $6.61M | 0.01% | 00.0% | Unchanged |
| Susquehanna Fundamental Investments, LLC | 44,796 | $6.77M | 0.12% | −11,388−20.3% | Reduced |
| Credit Suisse AG | 44,932 | $6.79M | 0.01% | −632−1.4% | Reduced |
| Barclays PLC | 45,895 | $6.93M | 0.00% | −9,550−17.2% | Reduced |
| Manufacturers Life Insurance Company, The | 47,471 | $7.17M | 0.01% | +1,870+4.1% | Added |
| Hi-Line Capital Management, LLC | 48,330 | $7.30M | 2.61% | +1,371+2.9% | Added |
| Millennium Management LLC | 49,687 | $7.51M | 0.01% | −97,429−66.2% | Reduced |
| UBS Group AG | 49,730 | $7.51M | 0.00% | −5,555−10.0% | Reduced |
| Ensign Peak Advisors, Inc | 49,775 | $7.52M | 0.02% | +2,830+6.0% | Added |
| Hudson Bay Capital Management LP | 50,000 | $7.55M | 0.11% | +50,000 | New |
| Russell Investments Group, Ltd. | 50,451 | $7.62M | 0.01% | −3,737−6.9% | Reduced |
| New York State Common Retirement Fund | 52,820 | $7.98M | 0.01% | +352+0.7% | Added |
| State Board of Administration of Florida Retirement System | 52,924 | $8.00M | 0.02% | −2,333−4.2% | Reduced |
| Gillson Capital LP | 53,008 | $8.01M | 0.59% | +53,008 | New |
| Retirement Systems of Alabama | 53,354 | $8.06M | 0.03% | −889−1.6% | Reduced |
| Los Angeles Capital Management LLC | 53,809 | $8.13M | 0.04% | −518−1.0% | Reduced |
| Deutsche Bank AG | 54,614 | $8.25M | 0.00% | −101,396−65.0% | Reduced |
| New York State Teachers Retirement System | 55,345 | $8.36M | 0.02% | +1,987+3.7% | Added |
| River & Mercantile Asset Management LLP | 56,834 | $8.59M | 0.67% | −28,154−33.1% | Reduced |
| D. E. Shaw & Co., Inc. | 59,486 | $8.99M | 0.01% | −41,859−41.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 60,721 | $9.17M | 0.10% | +60,721 | New |
| Alliancebernstein L.P. | 64,227 | $9.70M | 0.00% | −2,550−3.8% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 64,246 | $9.71M | 0.02% | +11,207+21.1% | Added |
| Man Group plc | 66,858 | $10.1M | 0.04% | −2,515−3.6% | Reduced |
| Ameriprise Financial Inc | 68,056 | $10.3M | 0.00% | −4,832−6.6% | Reduced |
| Truist Financial Corp | 68,215 | $10.3M | 0.02% | −393−0.6% | Reduced |
| California State Teachers Retirement System | 69,815 | $10.5M | 0.01% | −1,195−1.7% | Reduced |
| American International Group, Inc. | 70,965 | $10.7M | 0.06% | −2,999−4.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 71,233 | $10.8M | 0.22% | −49,928−41.2% | Reduced |
| Morgan Stanley | 72,577 | $11.0M | 0.00% | +21,407+41.8% | Added |
| Eaton Vance Management | 84,843 | $11.4M | 0.02% | +280.0% | Added |
| First Trust Advisors LP | 79,784 | $12.1M | 0.01% | +32,823+69.9% | Added |
| Channing Capital Management, LLC | 84,305 | $12.7M | 0.40% | +75+0.1% | Added |
| North Star Asset Management Inc | 90,937 | $13.7M | 0.75% | +150+0.2% | Added |
| Swiss National Bank | 92,000 | $13.9M | 0.01% | −1,900−2.0% | Reduced |
| Mackenzie Financial Corp | 92,899 | $14.0M | 0.02% | +3,424+3.8% | Added |
| Wells Fargo & Company | 93,084 | $14.1M | 0.00% | −40,364−30.2% | Reduced |
| Foundry Partners, LLC | 96,610 | $14.6M | 0.52% | −4,754−4.7% | Reduced |
| Legal & General Group Plc | 97,959 | $14.8M | 0.00% | −7,773−7.4% | Reduced |
| California Public Employees Retirement System | 100,291 | $15.2M | 0.01% | −1,654−1.6% | Reduced |
| UBS Asset Management Americas Inc | 100,491 | $15.2M | 0.01% | +12,661+14.4% | Added |
| Fred Alger Management, LLC | 104,129 | $15.7M | 0.04% | +1,615+1.6% | Added |
| Hallmark Capital Management Inc | 107,703 | $16.3M | 1.42% | −1,479−1.4% | Reduced |
| Rhumbline Advisers | 113,400 | $17.1M | 0.02% | −4,786−4.0% | Reduced |
| Macquarie Group Ltd | 114,584 | $17.3M | 0.01% | −500−0.4% | Reduced |
| Assenagon Asset Management S.A. | 122,676 | $18.5M | 0.08% | +100,849+462.0% | Added |