Company · Ownership research

Avantor, Inc. AVTR

CIK 0001722482 · CUSIP 05352A100

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 05352A100 (AVTR), not CUSIP 05352A900 (AVTR), CUSIP 05352A950 (AVTR), and does not merge CUSIPs.

This page lists the top 20 of 488 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	DODGE & COX CIK 200217 · View history	$1.63B 100,262,723 shares	0.93%	+1.12M(+1.10%)Added	SEC filing ↗ May 14, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$1.18B 72,736,778 shares	0.02%	+1.83M(+2.60%)Added	SEC filing ↗ May 2, 2025	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$1.05B 64,952,926 shares	0.02%	+983.17K(+1.50%)Added	SEC filing ↗ May 9, 2025	▾
04	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$680.32M 41,969,199 shares	0.45%	+608.81K(+1.50%)Added	SEC filing ↗ May 14, 2025	▾
05	BARROW HANLEY MEWHINNEY & STRAUSS LLC CIK 313028 · View history	$490.48M 30,257,993 shares	1.78%	-270.10K(-0.90%)Reduced	SEC filing ↗ May 12, 2025	▾
06	STATE STREET CORP CIK 93751 · View history	$382.52M 23,597,923 shares	0.02%	+290.54K(+1.20%)Added	SEC filing ↗ May 15, 2025	▾
07	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$302.68M 18,707,301 shares	0.17%	+571.10K(+3.10%)Added	SEC filing ↗ May 15, 2025	▾
08	1832 Asset Management L.P. CIK 944388 · View history	$293.84M 18,127,204 shares	0.56%	+8.58M(+89.80%)Added	SEC filing ↗ May 14, 2025	▾
09	UBS Group AG CIK 1610520 · View history	$271.21M 16,731,091 shares	0.06%	+11.61M(+226.70%)Added	SEC filing ↗ May 13, 2025	▾
10	MANUFACTURERS LIFE INSURANCE COMPANY, THE CIK 928047 · View history	$227.50M 14,034,699 shares	0.22%	+4.88M(+53.20%)Added	SEC filing ↗ May 15, 2025	▾
11	New Mountain Capital, L.L.C. CIK 1407718 · View history	$226.94M 14,000,000 shares	100.00%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2025	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$190.79M 11,796,440 shares	0.02%	+564.11K(+5.00%)Added	SEC filing ↗ May 13, 2025	▾
13	Invesco Ltd. CIK 914208 · View history	$189.16M 11,669,411 shares	0.04%	+1.88M(+19.30%)Added	SEC filing ↗ May 12, 2025	▾
14	Clarkston Capital Partners, LLC CIK 1562855 · View history	$155.49M 9,591,950 shares	3.07%	+1.45M(+17.80%)Added	SEC filing ↗ May 14, 2025	▾
15	BESSEMER GROUP INC CIK 1054074 · View history	$149.67M 9,232,884 shares	0.27%	+363.98K(+4.10%)Added	SEC filing ↗ Apr 23, 2025	▾
16	ROBECOSAM AG CIK 1418427 · View history	$134.36M 8,288,920 shares	3.31%	+676.37K(+8.90%)Added	SEC filing ↗ Apr 30, 2025	▾
17	NORGES BANK CIK 1374170 · Amended · View history	$124.77M 7,696,814 shares	0.02%	+933.05K(+13.80%)Added	SEC filing ↗ May 13, 2025	▾
18	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$106.72M 6,583,468 shares	0.03%	-2.01M(-23.40%)Reduced	SEC filing ↗ May 19, 2025	▾
19	MORGAN STANLEY CIK 895421 · View history	$102.41M 6,317,816 shares	0.01%	+390.20K(+6.60%)Added	SEC filing ↗ May 15, 2025	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$102.09M 6,298,195 shares	0.02%	+127.56K(+2.10%)Added	SEC filing ↗ May 13, 2025	▾

Showing 20 / 488 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

488

Cancelled or null records excluded

Disclosed shares

691,608,041

Not deduplicated across managers

Disclosed value

$11.28B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Avantor, Inc. · Q1 2025

Explore all 488 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.