AFFILIATED MANAGERS GROUP (AMG) Institutional Shareholders
AFFILIATED MANAGERS GROUP (AMG) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $8.48B in AMG holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AMG tracked by InsiderSet, reporting ownership valued at approximately $938.29M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $950.55M, representing an estimated gain of +1.31% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed AMG value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Morgan Stanley, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in AFFILIATED MANAGERS GROUP (AMG).
This page ranks the largest institutional AMG shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
550
Total Reported Value
$8.48B
Largest Holder
Blackrock, Inc.
Largest Position
$938.29M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
47
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 2,772,736 | $938,293,980 | $950,549,356 | +$12,255,376 | +1.31% | |
| Morgan Stanley | 0.03% | 1,487,219 | $503,275,490 | $509,848,418 | +$6,572,928 | +1.31% | |
| Vanguard Portfolio Management Llc | 0.02% | 1,391,836 | $470,997,302 | $477,149,218 | +$6,151,916 | +1.31% | |
| Vanguard Capital Management Llc | 0.01% | 1,151,085 | $389,527,164 | $394,614,960 | +$5,087,796 | +1.31% | |
| Boston Partners | 0.30% | 1,001,967 | $339,149,256 | $343,494,327 | +$4,345,071 | +1.28% | |
| Ariel Appreciation Fund | John W. Rogers Jr. | 3.37% | 999,676 | $338,290,358 | $342,708,926 | +$4,418,568 | +1.31% |
| State Street Corp | 0.01% | 883,323 | $298,916,503 | $302,820,791 | +$3,904,288 | +1.31% | |
| Millennium Management Llc | 0.20% | 875,116 | $296,139,254 | $300,007,267 | +$3,868,013 | +1.31% | |
| Fuller & Thaler Asset Management, Inc. | 0.79% | 857,756 | $290,264,589 | $294,055,912 | +$3,791,323 | +1.31% | |
| Dimensional Fund Advisors Lp | 0.04% | 670,195 | $226,804,617 | $229,756,250 | +$2,951,633 | +1.30% | |
| Geode Capital Management, Llc | 0.01% | 590,757 | $199,954,869 | $202,523,315 | +$2,568,446 | +1.28% | |
| Lsv Asset Management | 0.33% | 533,611 | $180,574,000 | $182,932,523 | +$2,358,523 | +1.31% | |
| Lyrical Asset Management Lp | 2.03% | 472,886 | $160,024,622 | $162,114,779 | +$2,090,157 | +1.31% | |
| Allianz Asset Management Gmbh | 0.14% | 453,989 | $153,629,877 | $155,636,509 | +$2,006,632 | +1.31% | |
| Bank Of America Corp | 0.01% | 432,420 | $146,330,872 | $148,242,224 | +$1,911,352 | +1.31% | |
| Invesco Ltd. | 0.01% | 380,623 | $128,802,824 | $130,485,177 | +$1,682,353 | +1.31% | |
| Norges Bank | 0.01% | 361,473 | $122,322,463 | $123,920,174 | +$1,597,711 | +1.31% | |
| Northern Trust Corp | 0.01% | 322,670 | $109,191,527 | $110,617,729 | +$1,426,202 | +1.31% | |
| Jane Street Group, Llc | 0.07% | 309,134 | $104,610,945 | $105,977,318 | +$1,366,373 | +1.31% | |
| Channing Capital Management, Llc | 2.36% | 302,514 | $102,370,738 | $103,707,849 | +$1,337,111 | +1.31% | |
| Charles Schwab Investment Management Inc | 0.01% | 287,795 | $97,389,828 | $98,661,882 | +$1,272,054 | +1.31% | |
| Bank Of New York Mellon Corp | 0.02% | 281,967 | $95,417,584 | $96,663,927 | +$1,246,343 | +1.31% | |
| Qube Research & Technologies Ltd | 0.10% | 268,737 | $90,940,601 | $92,128,418 | +$1,187,817 | +1.31% | |
| Goldman Sachs Group Inc | 0.01% | 258,331 | $87,419,211 | $88,561,033 | +$1,141,822 | +1.31% | |
| Fisher Asset Management, Llc | 0.02% | 246,463 | $83,403,362 | $84,492,446 | +$1,089,084 | +1.31% | |
| Raymond James Financial Inc | 0.02% | 239,235 | $80,957,494 | $82,014,543 | +$1,057,049 | +1.31% | |
| Clarkston Capital Partners, Llc | 6.54% | 228,683 | $77,386,327 | $78,397,106 | +$1,010,779 | +1.31% | |
| Bruni J V & Co | 6.49% | 210,094 | $71,095,810 | $72,024,425 | +$928,615 | +1.31% | |
| Citadel Advisors Llc | 0.04% | 198,492 | $67,169,692 | $68,047,027 | +$877,335 | +1.31% | |
| Kiltearn Partners Llp | 15.16% | 184,586 | $62,463,902 | $63,279,773 | +$815,871 | +1.31% | |
| Caisse De Depot Et Placement Du Quebec | 0.09% | 182,041 | $61,602,674 | $62,407,296 | +$804,622 | +1.31% | |
| Fmr Llc | 0.00% | 177,576 | $60,091,476 | $60,876,604 | +$785,128 | +1.31% | |
| Ubs Group Ag | 0.01% | 175,776 | $59,482,599 | $60,259,528 | +$776,929 | +1.31% | |
| Price T Rowe Associates Inc | 0.01% | 166,559 | $56,365,000 | $57,099,756 | +$734,756 | +1.30% | |
| Vanguard Fiduciary Trust Co | 0.01% | 165,842 | $56,120,933 | $56,853,954 | +$733,021 | +1.31% | |
| Lord, Abbett & Co. Llc | 0.16% | 164,477 | $55,659,000 | $56,386,005 | +$727,005 | +1.31% | |
| Alliancebernstein L.P. | 0.02% | 189,739 | $52,500,781 | $65,046,324 | +$12,545,543 | +23.90% | |
| Jpmorgan Chase & Co | 0.00% | 129,402 | $44,736,636 | $44,361,594 | -$375,042 | -0.84% | |
| Renaissance Technologies LLC | Jim Simons | 0.05% | 117,440 | $39,741,696 | $40,260,781 | +$519,085 | +1.31% |
| Sei Investments Co | 0.03% | 117,142 | $39,644,274 | $40,158,620 | +$514,346 | +1.30% | |
| Nomura Asset Management International Inc. | 0.06% | 116,158 | $39,308,000 | $39,821,286 | +$513,286 | +1.31% | |
| Treasurer Of The State Of North Carolina | 0.10% | 113,578 | $38,435,000 | $38,936,810 | +$501,810 | +1.31% | |
| Quantinno Capital Management Lp | 0.04% | 108,737 | $36,796,654 | $37,277,218 | +$480,564 | +1.31% | |
| Loomis Sayles & Co L P | 0.04% | 103,094 | $34,886,939 | $35,342,685 | +$455,746 | +1.31% | |
| Wells Fargo & Company/Mn | 0.01% | 93,544 | $31,655,209 | $32,068,754 | +$413,545 | +1.31% | |
| First Trust Advisors Lp | 0.02% | 90,253 | $30,541,615 | $30,940,533 | +$398,918 | +1.31% | |
| New York State Common Retirement Fund | 0.04% | 89,089 | $30,147,718 | $30,541,491 | +$393,773 | +1.31% | |
| Arbejdsmarkedets Tillaegspension | 0.65% | 88,640 | $29,995,776 | $30,387,565 | +$391,789 | +1.31% | |
| Polar Capital Holdings Plc | 0.08% | 85,359 | $28,885,486 | $29,262,772 | +$377,286 | +1.31% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 103,473 | $28,630,980 | $35,472,614 | +$6,841,634 | +23.90% |
Frequently asked questions about AMG
Who owns the most AMG stock?
The largest holders of AMG are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for AFFILIATED MANAGERS GROUP (AMG).
Is AMG widely held by superinvestors?
Many widely followed stocks like AMG appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AMG is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.