Avantor Inc

CUSIP 05352A100COMAVTRQ1 2026

13D / 13G Filings

Schedule 13D/13G on record

Beneficial Filers

Distinct reporting persons

Largest Stake

19.3%

Max % of class reported

Institutional Holders

422

13F filers (latest quarter)

44 filings · latest Feb 11, 2026

#	Filed	Reporting Person	Form	% of Class	Shares	Filing
1	Feb 11, 2026	Barrow Hanley Mewhinney &Amp; Strauss LLC	13G	4.9%	33.29M	SEC
2	Nov 14, 2025	T. Rowe Price Investment Management, Inc.	13G/A	4.8%	32.93M	SEC
3	Nov 12, 2025	Barrow Hanley Mewhinney &Amp; Strauss LLC	13G	5.1%	34.55M	SEC
4	Oct 17, 2025	Blackrock, Inc.	13G/A	8.7%	59.05M	SEC
5	Aug 14, 2025	T. Rowe Price Investment Management, Inc.	13G/A	8.3%	56.50M	SEC
6	Aug 13, 2025	Dodge &Amp; Cox	13G/A	17.2%	117.43M	SEC
7	Feb 14, 2025	T. Rowe Price Investment Management, Inc.	13G/A	6.1%	41.36M	SEC
8	Feb 13, 2025	Dodge &Amp; Cox	13G/A	14.6%	99.15M	SEC
9	Nov 14, 2024	T. Rowe Price Investment Management, Inc.	13G/A	9.9%	67.11M	SEC
10	Aug 9, 2024	Dodge & Cox	13G/A	10.1%	68.65M	SEC

See the full Schedule 13D/13G history for Avantor Inc.

Largest reported positions · latest quarter

#	Fund	Shares	Value
1	Dodge & Cox	119.65M	$938.04M
2	Blackrock, Inc.	65.70M	$515.12M
3	Wellington Management Group LLP	24.22M	$189.92M
4	Greenhaven Associates Inc	22.59M	$177.14M
5	Barrow Hanley Mewhinney & Strauss LLC	22.36M	$175.29M
6	State Street Corp	20.72M	$162.45M
7	Engine Capital Management, LP	19.78M	$155.08M
8	Dimensional Fund Advisors LP	16.89M	$132.44M
9	New Mountain Capital, L.L.C.	14.00M	$109.76M
10	D. E. Shaw & Co., Inc.	13.11M	$102.79M