AMG Affiliated Managers Group Inc.
Affiliated Managers Group Inc. (AMG) Institutional Ownership
What the institutions did with AMG last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 2.8M | 11.0% |
| MORGAN STANLEY | 1.5M | 5.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | 5.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | 4.6% |
| Boston Partners | 1.0M | 4.0% |
| ARIEL INVESTMENTS, LLC | 999.7K | 4.0% |
| STATE STREET CORP | 883.3K | 3.5% |
| MILLENNIUM MANAGEMENT LLC | 875.1K | 3.5% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 857.8K | 3.4% |
| DIMENSIONAL FUND ADVISORS LP | 670.2K | 2.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 590.8K | 2.3% |
| LSV ASSET MANAGEMENT | 533.6K | 2.1% |
| LYRICAL ASSET MANAGEMENT LP | 472.9K | 1.9% |
| Allianz Asset Management GmbH | 454.0K | 1.8% |
| BANK OF AMERICA CORP /DE/ | 432.4K | 1.7% |
| Invesco Ltd. | 380.6K | 1.5% |
| NORGES BANK | 361.5K | 1.4% |
| NORTHERN TRUST CORP | 322.7K | 1.3% |
| JANE STREET GROUP, LLC | 309.1K | 1.2% |
| Channing Capital Management, LLC | 302.5K | 1.2% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 287.8K | 1.1% |
| Bank of New York Mellon Corp | 282.0K | 1.1% |
| Qube Research & Technologies Ltd | 268.7K | 1.1% |
| GOLDMAN SACHS GROUP INC | 258.3K | 1.0% |
| Fisher Asset Management, LLC | 246.5K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | Increased | 5.4K | 875.1K | +869.7K |
| MORGAN STANLEY | Reduced | 1.7M | 1.5M | -245.3K |
| Artisan Partners Limited Partnership | Sold Out | 173.6K | 0 | -173.6K |
| Woodline Partners LP | Sold Out | 145.9K | 0 | -145.9K |
| Qube Research & Technologies Ltd | Increased | 154.2K | 268.7K | +114.5K |
| FULLER & THALER ASSET MANAGEMENT, INC. | Increased | 760.2K | 857.8K | +97.5K |
| BlackRock, Inc. | Reduced | 2.9M | 2.8M | -94.9K |
| Clarkston Capital Partners, LLC | Reduced | 313.7K | 228.7K | -85.0K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | 130.8K | 54.1K | -76.8K |
| GOLDMAN SACHS GROUP INC | Increased | 185.4K | 258.3K | +73.0K |
| Zurich Insurance Group Ltd/FI | New | 0 | 71.3K | +71.3K |
| Capricorn Fund Managers Ltd | New | 0 | 69.0K | +69.0K |
| Man Group plc | Reduced | 90.5K | 24.0K | -66.5K |
| ARIEL INVESTMENTS, LLC | Reduced | 1.1M | 999.7K | -64.4K |
| Invesco Ltd. | Increased | 316.5K | 380.6K | +64.1K |
| Russell Investments Group, Ltd. | Reduced | 92.3K | 29.9K | -62.4K |
| Prana Capital Management, LP | Sold Out | 61.5K | 0 | -61.5K |
| Freestone Grove Partners LP | Sold Out | 57.8K | 0 | -57.8K |
| LSV ASSET MANAGEMENT | Increased | 476.8K | 533.6K | +56.8K |
| JANE STREET GROUP, LLC | Increased | 252.5K | 309.1K | +56.6K |
| CITADEL ADVISORS LLC | Reduced | 247.2K | 198.5K | -48.7K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 718.3K | 670.2K | -48.1K |
| UBS Group AG | Increased | 129.1K | 175.8K | +46.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 635.8K | 590.8K | -45.0K |
| Point72 Asset Management, L.P. | Sold Out | 44.3K | 0 | -44.3K |
| STATE STREET CORP | Reduced | 926.7K | 883.3K | -43.4K |
| STRS OHIO | Increased | 653 | 42.3K | +41.6K |
| BRUNI J V & CO /CO | Reduced | 249.8K | 210.1K | -39.7K |
| Schonfeld Strategic Advisors LLC | Reduced | 66.3K | 26.7K | -39.5K |
| Caisse de depot et placement du Quebec | Reduced | 220.9K | 182.0K | -38.8K |
| FRANKLIN RESOURCES INC | Reduced | 119.6K | 83.2K | -36.4K |
| Allianz Asset Management GmbH | Reduced | 488.7K | 454.0K | -34.8K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 3.3K | 37.4K | +34.1K |
| FIRST TRUST ADVISORS LP | Increased | 56.2K | 90.3K | +34.0K |
| BW Gestao de Investimentos Ltda. | Sold Out | 33.0K | 0 | -33.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.4M | 1.4M | +32.0K |
| Engineers Gate Manager LP | Increased | 19.8K | 51.9K | +32.0K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | Increased | 9.9K | 41.3K | +31.3K |
| CAPITAL FUND MANAGEMENT S.A. | New | 0 | 30.8K | +30.8K |
| Boston Partners | Increased | 971.2K | 1.0M | +30.7K |
| PEAK6 LLC | New | 0 | 29.6K | +29.6K |
| LYRICAL ASSET MANAGEMENT LP | Reduced | 502.1K | 472.9K | -29.2K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 103.5K | 74.9K | -28.6K |
| Oak Thistle LLC | Reduced | 31.8K | 5.1K | -26.7K |
| NORTHERN TRUST CORP | Reduced | 348.9K | 322.7K | -26.2K |
| Y-Intercept (Hong Kong) Ltd | Reduced | 25.9K | 1.8K | -24.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 1.2M | 1.2M | -23.7K |
| BANK OF AMERICA CORP /DE/ | Increased | 409.6K | 432.4K | +22.8K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 24.1K | 1.8K | -22.3K |
| Moran Wealth Management, LLC | Increased | 23.2K | 45.5K | +22.3K |
| BASSWOOD CAPITAL MANAGEMENT, L.L.C. | Increased | 12.3K | 34.5K | +22.2K |
| MARSHALL WACE, LLP | Increased | 2.4K | 23.4K | +21.0K |
| VAN ECK ASSOCIATES CORP | New | 0 | 20.3K | +20.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 308.0K | 287.8K | -20.2K |
| Bank of New York Mellon Corp | Reduced | 300.3K | 282.0K | -18.3K |
| LOOMIS SAYLES & CO L P | Increased | 85.9K | 103.1K | +17.1K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 183.6K | 166.6K | -17.1K |
| Susquehanna Portfolio Strategies, LLC | Reduced | 26.1K | 9.5K | -16.6K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 206.1K | 189.7K | -16.4K |
| NISA INVESTMENT ADVISORS, LLC | Reduced | 24.3K | 8.3K | -15.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.