Avantor, Inc. (AVTR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

655,000,000Shares Outstanding

2,438,581Shares held by institutions

$22,434,945Value of institutional holdings

77.85%Institutional ownership %

3.55%Shares Changed QoQ

313No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 313 institutional investors hold a position in Avantor, Inc. (NYSE:AVTR).

Avantor saw its institutional ownership percentage fell to 77.8% in December 2025 from 99.2% in September 2025.
In percentage terms, this reflects as a holdings change of 3.55% quarter on quarter, and a decrease of 35.46% year over year.
A review of institutional activity for Avantor shows 120 of 313 filers increasing their positions, while 153 reduced their stake, and 40 remained unchanged.
The aggregate institutional position in Avantor now stands at 509.91Mn shares as of December 2025, after investors increased their holdings (up by 17.49Mn shares quarter on quarter which is down 165.52Mn shares year over year).
The top institutional stake in Avantor as of December 31, 2025 belongs to DODGE & COX, which owns 117.07Mn shares, or 17.87% of the company.
Among the most significant buyers of Avantor during December 2025 were MORGAN STANLEY (11.22Mn), NORGES BANK (6.40Mn), JANE STREET GROUP, LLC (3.66Mn), Assenagon Asset Management S.A. (3.62Mn), UBS Group AG (3.57Mn).
Leading sellers of Avantor stock in December 2025 included MANUFACTURERS LIFE INSURANCE COMPANY, THE (3.27Mn), THRIVENT FINANCIAL FOR LUTHERANS (2.59Mn), SOUTHEASTERN ASSET MANAGEMENT INC/TN/ (1.60Mn), BARROW HANLEY MEWHINNEY & STRAUSS LLC (1.26Mn), BlackRock, Inc. (1.12Mn).
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), GREENHAVEN ASSOCIATES INC (20.50Mn), STATE STREET CORP (20.21Mn), MORGAN STANLEY (17.47Mn), Clarkston Capital Partners, LLC (15.11Mn), DIMENSIONAL FUND ADVISORS LP (14.61Mn), GEODE CAPITAL MANAGEMENT, LLC (11.98Mn).

313 Institutional Holders

2,438,581 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
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
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	11,978,560	-317,126	-2.58%	$137,306,603.00
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
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
NORGES BANK	31 Dec, 2025	6,398,087	6,398,087	0.00%	$73,322,077.00
EARNEST PARTNERS LLC	31 Dec, 2025	6,031,807	-164,905	-2.66%	$69,124,508.00
SEI INVESTMENTS CO	31 Dec, 2025	5,241,143	677,675	14.85%	$60,063,519.00
VOYA INVESTMENT MANAGEMENT LLC	31 Dec, 2025	4,961,474	-6,066	-0.12%	$56,858,492.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	4,879,423	151,144	3.20%	$55,918,188.00
Bank of New York Mellon Corp	31 Dec, 2025	4,417,910	93,202	2.16%	$50,629,245.00

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