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.
Sign in or subscribeLargest 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% |
| Allianz Asset Management GmbH | 479.6K | 1.9% |
| LYRICAL ASSET MANAGEMENT LP | 472.9K | 1.9% |
| 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 |
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.