AVTR Avantor, Inc.
Avantor, Inc. (AVTR) Institutional Ownership
What the institutions did with AVTR 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 |
|---|---|---|
| Dodge & Cox | 120.0M | 17.2% |
| BlackRock, Inc. | 70.3M | 10.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31.3M | 4.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 30.8M | 4.4% |
| GREENHAVEN ASSOCIATES INC | 24.6M | 3.5% |
| STATE STREET CORP | 21.6M | 3.1% |
| DIMENSIONAL FUND ADVISORS LP | 20.4M | 2.9% |
| Engine Capital Management, LP | 19.9M | 2.8% |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 19.7M | 2.8% |
| New Mountain Capital, L.L.C. | 14.0M | 2.0% |
| Invesco Ltd. | 13.9M | 2.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 13.2M | 1.9% |
| MARSHALL WACE, LLP | 13.1M | 1.9% |
| AQR CAPITAL MANAGEMENT LLC | 11.6M | 1.7% |
| BANK OF AMERICA CORP /DE/ | 11.0M | 1.6% |
| EARNEST PARTNERS LLC | 10.7M | 1.5% |
| LONDON CO OF VIRGINIA | 10.5M | 1.5% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 10.3M | 1.5% |
| D. E. Shaw & Co., Inc. | 9.6M | 1.4% |
| First Pacific Advisors, LP | 8.2M | 1.2% |
| SEI INVESTMENTS CO | 7.9M | 1.1% |
| FMR LLC | 7.8M | 1.1% |
| GENDELL JEFFREY L | 7.6M | 1.1% |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | 7.4M | 1.1% |
| Clarkston Capital Partners, LLC | 6.8M | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | Sold Out | 24.2M | 0 | -24.2M |
| T. Rowe Price Investment Management, Inc. | Sold Out | 14.8M | 0 | -14.8M |
| MARSHALL WACE, LLP | Increased | 3.4M | 13.1M | +9.7M |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | New | 0 | 7.4M | +7.4M |
| AQR CAPITAL MANAGEMENT LLC | Increased | 4.9M | 11.6M | +6.8M |
| Invesco Ltd. | Increased | 8.1M | 13.9M | +5.8M |
| JANE STREET GROUP, LLC | Sold Out | 5.0M | 0 | -5.0M |
| EARNEST PARTNERS LLC | Increased | 6.0M | 10.7M | +4.7M |
| BlackRock, Inc. | Increased | 65.7M | 70.3M | +4.6M |
| BANK OF AMERICA CORP /DE/ | Increased | 7.1M | 11.0M | +3.9M |
| D. E. Shaw & Co., Inc. | Reduced | 13.1M | 9.6M | -3.5M |
| DIMENSIONAL FUND ADVISORS LP | Increased | 16.9M | 20.4M | +3.5M |
| Eversept Partners, LP | Sold Out | 3.0M | 0 | -3.0M |
| Freestone Grove Partners LP | Increased | 2.8M | 5.7M | +2.9M |
| Robeco Schweiz AG | Reduced | 4.2M | 1.5M | -2.7M |
| GENDELL JEFFREY L | Increased | 4.9M | 7.6M | +2.7M |
| SEI INVESTMENTS CO | Increased | 5.3M | 7.9M | +2.7M |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Reduced | 22.4M | 19.7M | -2.6M |
| GOLDMAN SACHS GROUP INC | Increased | 3.7M | 6.2M | +2.5M |
| NATIXIS ADVISORS, LLC | Increased | 2.5M | 4.9M | +2.4M |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 2.3M | 0 | -2.3M |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 3.7M | 1.5M | -2.3M |
| ROYCE & ASSOCIATES LP | Increased | 1.5M | 3.7M | +2.2M |
| Western Standard LLC | New | 0 | 2.1M | +2.1M |
| GREENHAVEN ASSOCIATES INC | Increased | 22.6M | 24.6M | +2.0M |
| UBS Group AG | Increased | 3.7M | 5.7M | +2.0M |
| Clarkston Capital Partners, LLC | Reduced | 8.6M | 6.8M | -1.8M |
| Voss Capital, LP | Reduced | 4.4M | 2.7M | -1.8M |
| JONES FINANCIAL COMPANIES LLLP | Increased | 2.3M | 4.1M | +1.8M |
| MILLENNIUM MANAGEMENT LLC | Reduced | 2.4M | 753.6K | -1.7M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Increased | 2.0M | 3.5M | +1.5M |
| AMERIPRISE FINANCIAL INC | Increased | 4.1M | 5.5M | +1.4M |
| Quantinno Capital Management LP | Increased | 1.2M | 2.4M | +1.3M |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Increased | 3.5M | 4.7M | +1.2M |
| Gotham Asset Management, LLC | Increased | 1.3M | 2.5M | +1.2M |
| MACKENZIE FINANCIAL CORP | Increased | 224.6K | 1.4M | +1.2M |
| SHAPIRO CAPITAL MANAGEMENT LLC | Increased | 536.3K | 1.7M | +1.1M |
| Corient Private Wealth LP | Increased | 637.5K | 1.8M | +1.1M |
| Assenagon Asset Management S.A. | Increased | 106.1K | 1.1M | +1.0M |
| TD Asset Management Inc | Sold Out | 930.6K | 0 | -930.6K |
| Stanley Capital Management, LLC | Sold Out | 918.5K | 0 | -918.5K |
| STATE STREET CORP | Increased | 20.7M | 21.6M | +851.9K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 813.5K | +813.5K |
| Squarepoint Ops LLC | Increased | 194.2K | 1.0M | +812.2K |
| READYSTATE ASSET MANAGEMENT LP | Sold Out | 788.3K | 0 | -788.3K |
| Woodline Partners LP | Sold Out | 755.7K | 0 | -755.7K |
| CastleKnight Management LP | New | 0 | 751.7K | +751.7K |
| KETTLE HILL CAPITAL MANAGEMENT, LLC | Increased | 1.1M | 1.9M | +732.4K |
| DIAMOND HILL CAPITAL MANAGEMENT INC | Reduced | 1.8M | 1.0M | -720.6K |
| EASTERLY INVESTMENT PARTNERS LLC | New | 0 | 690.8K | +690.8K |
| MORGAN STANLEY | Increased | 6.1M | 6.8M | +659.9K |
| Melqart Asset Management (UK) Ltd | New | 0 | 635.8K | +635.8K |
| Russell Investments Group, Ltd. | Increased | 410.0K | 1.0M | +613.9K |
| Qube Research & Technologies Ltd | Sold Out | 608.3K | 0 | -608.3K |
| TWINBEECH CAPITAL LP | Sold Out | 567.4K | 0 | -567.4K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 111.5K | 673.3K | +561.8K |
| Weiss Asset Management LP | Sold Out | 527.9K | 0 | -527.9K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Increased | 302.2K | 764.7K | +462.5K |
| Taikang Asset Management (Hong Kong) Co Ltd | Reduced | 1.0M | 585.0K | -433.9K |
| Brevan Howard Capital Management LP | Sold Out | 418.4K | 0 | -418.4K |
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.