AVTR Avantor, Inc.

NYSE
$14.81

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.

Managers compared
516
filed both this quarter and last
Managers holding
452
+29 on the quarter
Buyers
282
93 opened new
Sellers
174
64 sold out entirely
Buyer share
61.8%
of managers who traded it
Breadth
+23.7
net buyers, as a share of those trading

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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Ownership map

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.

Cut Unchanged Added Color saturates at ±50%.

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.