AFFILIATED MANAGERS GROUP IN AMG
COM · Common Stock · CUSIP 008252108 · ISIN US0082521081
Global investment management company
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($22.4m this quarter). Holder counts are more reliable. Shares outstanding: 29.3m as of 2025-02-12, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $184.94. Options: 4 managers hold calls ($1.5m notional), 4 hold puts ($3.3m).
Trends to Q4 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 331 |
| Q4 2022 | 368 |
| Q1 2023 | 389 |
| Q2 2023 | 382 |
| Q3 2023 | 362 |
| Q4 2023 | 388 |
| Q1 2024 | 405 |
| Q2 2024 | 408 |
| Q3 2024 | 423 |
| Q4 2024 | 409 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2023 | 195 | 180 |
| Q2 2023 | 147 | 214 |
| Q3 2023 | 150 | 204 |
| Q4 2023 | 182 | 163 |
| Q1 2024 | 176 | 187 |
| Q2 2024 | 183 | 206 |
| Q3 2024 | 202 | 186 |
| Q4 2024 | 156 | 224 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2024 | $4.2m | $2.5m | 0.61 |
| Q2 2024 | $1.2m | $5.3m | 4.41 |
| Q3 2024 | $1.9m | $4.8m | 2.46 |
| Q4 2024 | $1.5m | $3.3m | 2.23 |
Biggest buyers
| Boston Partners | Added | +373.7k |
| LSV ASSET MANAGEMENT | Added | +187.3k |
| MILLENNIUM MANAGEMENT LLC | Added | +165.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +148.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +91.8k |
| FIRST TRUST ADVISORS LP | Added | +89.4k |
| Fisher Asset Management, LLC | Added | +71.5k |
| UBS Group AG | Added | +70.6k |
| BlackRock, Inc. | Added | +52.6k |
| AMERICAN CENTURY COMPANIES INC | Added | +42.9k |
Biggest sellers
| Clarkston Capital Partners, LLC | Reduced | -203.1k |
| JPMORGAN CHASE & CO | Reduced | -189.3k |
| MORGAN STANLEY | Reduced | -87.6k |
| JANE STREET GROUP, LLC | Sold out | -84.9k |
| Kiltearn Partners LLP | Reduced | -83.7k |
| Qube Research & Technologies Ltd | Reduced | -81.2k |
| HRT FINANCIAL LP | Reduced | -73.2k |
| D. E. Shaw & Co., Inc. | Reduced | -73.1k |
| CITADEL ADVISORS LLC | Reduced | -71.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -59.0k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $554.8k3.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $517.8k2.8k shares |
| Walleye Trading LLC | New | $388.3k2.1k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| Genus Capital Management Inc. | Reduced | $2.4m12.8k shares |
| Walleye Trading LLC | Added | $610.2k3.3k shares |
| Atria Wealth Solutions, Inc. | New | $277.4k1.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.1% |
Fell to 5% or below in the last year: MORGAN STANLEY (5.5%, 2026-08-12), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Clarkston Capital Partners, LLC (3.2%, 2026-02-13)
Insider purchases and sales in Q4 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2023 | 1 | $500.8k | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 3 | $5.4m | — |
| Q4 2024 | 0 | — | 0 | — | — |
None reported in Q4 2024.
Holders, Q4 2024
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 3.2m $593.9m | Added +31.3k |
| BlackRock, Inc. 0.01% of their portfolio | 3.0m $549.1m | Added +52.6k |
| MORGAN STANLEY 0.03% of their portfolio | 2.3m $421.6m | Reduced -87.6k |
| Clarkston Capital Partners, LLC 5.57% of their portfolio | 1.6m $290.7m | Reduced -203.1k |
| ARIEL INVESTMENTS, LLC 2.81% of their portfolio | 1.4m $263.3m | Reduced -28.2k |
| Boston Partners 0.27% of their portfolio | 1.2m $219.0m | Added +373.7k |
| STATE STREET CORP 0.01% of their portfolio | 1.0m $189.1m | Added +10.3k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 761.2k $140.8m | Reduced -20.9k |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 6.13% of their portfolio | 702.5k $129.9m | Reduced -22.3k |
| LYRICAL ASSET MANAGEMENT LP 1.69% of their portfolio | 618.2k $114.3m | Reduced -7.1k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.39% of their portfolio | 554.1k $102.5m | Reduced -4.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 521.5k $96.5m | Reduced -4.5k |
| Channing Capital Management, LLC 2.54% of their portfolio | 514.6k $95.2m | Added +26.7k |
| LSV ASSET MANAGEMENT 0.18% of their portfolio | 424.0k $78.4m | Added +187.3k |
| Kiltearn Partners LLP 11.64% of their portfolio | 380.8k $70.4m | Reduced -83.7k |
| NORGES BANK 0.01% of their portfolio | 371.4k $68.7m | Reduced -13.5k |
| CITADEL ADVISORS LLC 0.06% of their portfolio | 351.0k $64.9m | Reduced -71.7k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 349.6k $64.7m | Added +27.0k |
| Allianz Asset Management GmbH 0.09% of their portfolio | 343.7k $63.6m | Reduced -10.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 331.1k $61.2m | Added +2.3k |
| MILLENNIUM MANAGEMENT LLC 0.05% of their portfolio | 305.5k $56.5m | Added +165.5k |
| BRUNI J V & CO /CO 6.32% of their portfolio | 301.8k $55.8m | Reduced -1.1k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 281.0k $52.0m | Reduced -12.9k |
| LGT CAPITAL PARTNERS LTD. 1.93% of their portfolio | 274.0k $50.7m | Reduced -43.9k |
| Invesco Ltd. 0.01% of their portfolio | 267.8k $49.5m | Added +9.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 227.3k $42.0m | Added +148.1k |
| FIRST TRUST ADVISORS LP 0.04% of their portfolio | 217.6k $40.2m | Added +89.4k |
| FMR LLC 0.00% of their portfolio | 213.4k $39.5m | Reduced -14.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.05% of their portfolio | 192.5k $35.6m | Added +7.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 186.0k $34.4m | Reduced -7.1k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.11% of their portfolio | 171.2k $31.7m | Added +2.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 164.1k $30.3m | Reduced -189.3k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 156.2k $28.9m | Added +71.5k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 155.8k $28.8m | First filing |
| UBS Group AG 0.01% of their portfolio | 139.6k $25.8m | Added +70.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 135.5k $25.1m | Added +91.8k |
| BASSWOOD CAPITAL MANAGEMENT, L.L.C. 1.34% of their portfolio | 124.2k $23.0m | Reduced -7.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.02% of their portfolio | 118.6k $21.9m | Added +5.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 111.9k $20.7m | Reduced -23.7k |
| GREAT LAKES ADVISORS, LLC 0.17% of their portfolio | 110.0k $20.3m | Reduced -3.8k |
| ALGERT GLOBAL LLC 0.45% of their portfolio | 104.3k $19.3m | Added +9.1k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 102.1k $18.9m | Reduced -23.9k |
| NORTH STAR ASSET MANAGEMENT INC 0.83% of their portfolio | 101.9k $18.8m | Added +583 |
| Retirement Systems of Alabama 0.07% of their portfolio | 99.2k $18.4m | Added +535 |
| BARCLAYS PLC 0.01% of their portfolio | 89.8k $16.6m | Added +13.3k |
| MACQUARIE GROUP LTD 0.02% of their portfolio | 88.6k $16.4m | Reduced -13.9k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 85.5k $15.8m | Reduced -2.4k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 82.5k $15.3m | Reduced -19.4k |
| Goodman Financial Corp 3.14% of their portfolio | 79.5k $14.7m | Added +568 |
| Penn Capital Management Company, LLC 1.44% of their portfolio | 79.4k $14.7m | Reduced -10.6k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.06% of their portfolio | 78.4k $14.5m | Reduced -21.7k |
| REINHART PARTNERS, LLC. 0.53% of their portfolio | 74.8k $13.8m | Reduced -14.7k |
| Cambria Investment Management, L.P. 0.82% of their portfolio | 72.5k $13.4m | Added +1.2k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 70.1k $13.0m | Reduced -73.1k |
| Bridgewater Associates, LP 0.06% of their portfolio | 69.9k $12.9m | Reduced -9.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 69.3k $12.8m | Added +140 |
| California Public Employees Retirement System 0.01% of their portfolio | 68.0k $12.6m | Reduced -8.0k |
| Wallace Capital Management Inc. 1.72% of their portfolio | 68.0k $12.6m | Reduced -1.4k |
| Man Group plc 0.04% of their portfolio | 67.0k $12.4m | Reduced -22.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 62.6k $11.6m | Added +397 |
| Swiss National Bank 0.01% of their portfolio | 58.6k $10.8m | Reduced -3.6k |
| Polar Capital Holdings Plc 0.06% of their portfolio | 56.5k $10.5m | Reduced -32.0k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 56.2k $10.4m | Reduced -16.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio | 52.6k $9.7m | Reduced -59.0k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 52.4k $9.7m | Reduced -27.6k |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 51.5k $9.5m | Reduced -81.2k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 51.0k $9.4m | Added +42.9k |
| Callodine Capital Management, LP 1.91% of their portfolio | 50.0k $9.2m | Added +37.5k |
| Brandywine Global Investment Management, LLC 0.07% of their portfolio | 49.1k $9.1m | Reduced -210 |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 47.6k $8.8m | Added +114 |
| SEI INVESTMENTS CO 0.01% of their portfolio | 47.5k $8.8m | Reduced -18.1k |
| Legal & General Group Plc 0.00% of their portfolio | 47.4k $8.8m | Reduced -1.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 45.4k $8.4m | Reduced -54.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 45.4k $8.4m | Reduced -1.0k |
| Treasurer of the State of North Carolina 0.03% of their portfolio | 45.3k $8.4m | Added +444 |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.02% of their portfolio | 43.9k $8.1m | First filing |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 43.0k $8.0m | Added +2.4k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 41.2k $7.6m | Reduced -4.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 39.5k $7.3m | Reduced -10.6k |
| STOREBRAND ASSET MANAGEMENT AS 0.02% of their portfolio | 38.6k $7.1m | Reduced -1.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 37.8k $7.0m | Reduced -3.2k |
| Calamos Advisors LLC 0.03% of their portfolio | 35.4k $6.6m | Unchanged |
| Corebridge Financial, Inc. 0.03% of their portfolio | 34.2k $6.3m | Reduced -1.1k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio | 33.5k $6.2m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 29.9k $5.5m | Reduced -1.3k |
| SG Americas Securities, LLC 0.02% of their portfolio | 29.6k $5.5m | Added +23.1k |
| ASSETMARK, INC 0.01% of their portfolio | 28.7k $5.3m | Added +209 |
| CANADA LIFE ASSURANCE Co 0.01% of their portfolio | 27.9k $5.2m | Reduced -458 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 27.9k $5.2m | Reduced -2.7k |
| North Reef Capital Management LP 0.23% of their portfolio | 27.4k $5.1m | New |
| Sterling Capital Management LLC 0.07% of their portfolio | 26.5k $4.9m | Added +426 |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 25.0k $4.6m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 24.9k $4.6m | Unchanged |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.01% of their portfolio | 24.2k $4.5m | Added +547 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 24.0k $4.4m | Reduced -138 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 23.5k $4.4m | Reduced -70 |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 23.5k $3.5m | Added +18.3k |
| CITIGROUP INC 0.00% of their portfolio | 23.0k $4.3m | Added +622 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 22.4k $4.1m | Added +8.5k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 21.6k $4.0m | Added +3.3k |