Avantor, Inc. (AVTR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

679,743,590Shares Outstanding

16,618,390Shares held by institutions

$150,396,430Value of institutional holdings

96.84%Institutional ownership %

4.40%Shares Changed QoQ

393No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Avantor, Inc. (NYSE:AVTR) currently has 393 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

Institutional ownership in Avantor edged down to 96.8% in December 2025, compared to 99.2% in September 2025.
Institutional share ownership changed by 4.40% QoQ, while the number of institutional owners saw a decrease of 18.97% YoY.
During the quarter, 168 institutions bought more Avantor shares, 180 sold shares, and 45 of the 393 total investors held their position steady.
This class of investors increased its holdings in Avantor to 658.29Mn shares for the 13F-cycle ending December 2025, up by 27.74Mn shares quarter on quarter, and down 17.14Mn shares year over year.
As of December 31, 2025, DODGE & COX held Avantor's largest shareholding position with over 117.07Mn shares, representing 17.22% of total outstanding shares.
Among the most significant buyers of Avantor during December 2025 were WELLINGTON MANAGEMENT GROUP LLP (23.44Mn), MORGAN STANLEY (11.22Mn), NORGES BANK (6.40Mn), D. E. Shaw & Co., Inc. (4.84Mn), JANE STREET GROUP, LLC (3.66Mn).
Leading sellers of Avantor stock in December 2025 included T. Rowe Price Investment Management, Inc. (11.69Mn), Engine Capital Management, LP (7.79Mn), CITADEL ADVISORS LLC (6.73Mn), MANUFACTURERS LIFE INSURANCE COMPANY, THE (3.27Mn), ROYAL BANK OF CANADA (2.88Mn).
The top 10 institutional holders of Avantor for the quarter ending December 2025 included DODGE & COX (117.07Mn), VANGUARD GROUP INC (64.90Mn), BlackRock, Inc. (59.60Mn), BARROW HANLEY MEWHINNEY & STRAUSS LLC (33.29Mn), WELLINGTON MANAGEMENT GROUP LLP (23.44Mn), T. Rowe Price Investment Management, Inc. (21.24Mn), GREENHAVEN ASSOCIATES INC (20.50Mn), STATE STREET CORP (20.21Mn), MORGAN STANLEY (17.47Mn), Clarkston Capital Partners, LLC (15.11Mn).

393 Institutional Holders

16,618,390 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
DODGE & COX	31 Dec, 2025	117,065,143	-681,745	-0.58%	$1,341,566,539.00
VANGUARD GROUP INC	31 Dec, 2025	64,904,889	-1,084,088	-1.64%	$743,810,028.00
BlackRock, Inc.	31 Dec, 2025	59,596,926	-1,120,061	-1.84%	$682,980,769.00
BARROW HANLEY MEWHINNEY & STRAUSS LLC	31 Dec, 2025	33,287,174	-1,260,955	-3.65%	$381,471,014.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	23,436,636	23,436,636	0.00%	$268,583,848.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	21,238,914	-11,688,781	-35.50%	$243,398.00
GREENHAVEN ASSOCIATES INC	31 Dec, 2025	20,500,653	2,189,083	11.95%	$234,937,483.00
STATE STREET CORP	31 Dec, 2025	20,209,406	-156,364	-0.77%	$231,599,793.00
MORGAN STANLEY	31 Dec, 2025	17,468,418	11,216,565	179.41%	$200,188,089.00
Clarkston Capital Partners, LLC	31 Dec, 2025	15,105,065	84,740	0.56%	$173,104,045.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	14,606,596	1,222,850	9.14%	$167,392,027.00
New Mountain Capital, L.L.C.	31 Dec, 2025	14,000,000	0	0.00%	$160,440,000.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	11,978,560	-317,126	-2.58%	$137,306,603.00
LONDON CO OF VIRGINIA	31 Dec, 2025	11,936,522	-857,435	-6.70%	$136,792,547.00
Engine Capital Management, LP	31 Dec, 2025	11,927,812	-7,792,618	-39.52%	$136,692,726.00
MANUFACTURERS LIFE INSURANCE COMPANY, THE	31 Dec, 2025	8,734,396	-3,271,856	-27.25%	$100,096,178.00
UBS Group AG	31 Dec, 2025	7,732,643	3,574,739	85.97%	$88,616,089.00
FMR LLC	31 Dec, 2025	7,670,732	48,902	0.64%	$87,906,592.00
Robeco Schweiz AG	31 Dec, 2025	7,280,961	-639,216	-8.07%	$83,439,813.00
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	31 Dec, 2025	7,214,408	-287,678	-3.83%	$82,677,116.00

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