Who owns Avantor, Inc.?
Institutional ownership of AVTR from SEC Form 13F filings across 287 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
287
13F holders
$3.18B
value, 2026 filers
48.7%
of shares outstanding (329.5M sh)
52
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of AVTR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 70.3M | $695.8M | 0.0% | 10.4% | +7.0% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 31.3M | $310.3M | 0.0% | 4.6% | +0.2% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 30.8M | $304.9M | 0.0% | 4.6% | -49.7% |
| 4 | Invesco Ltd. | 13.9M | $137.5M | 0.0% | 2.1% | +72.0% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 13.2M | $130.5M | 0.0% | 1.9% | +2.2% |
| 6 | MARSHALL WACE, LLP | 13.1M | $130.0M | 0.1% | 1.9% | +281.9% |
| 7 | BANK OF AMERICA CORP /DE/ | 11.0M | $108.8M | 0.0% | 1.6% | +55.5% |
| 8 | D. E. Shaw & Co., Inc. | 9.6M | $94.8M | 0.0% | 1.4% | -27.0% |
| 9 | SEI INVESTMENTS CO | 7.9M | $78.7M | 0.1% | 1.2% | +50.3% |
| 10 | FMR LLC | 7.8M | $77.7M | 0.0% | 1.2% | +3.1% |
| 11 | MORGAN STANLEY | 6.8M | $66.9M | 0.0% | 1% | +10.8% |
| 12 | GOLDMAN SACHS GROUP INC | 6.2M | $61.4M | 0.0% | 0.9% | +67.0% |
| 13 | NORGES BANKNEW | 6.1M | $60.3M | 0.0% | 0.9% | new |
| 14 | Sixth Street Partners Management Company, L.P.NEW | 5.8M | $57.6M | 9.9% | 0.9% | new |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 5.8M | $57.6M | 0.0% | 0.9% | +7.6% |
| 16 | NORTHERN TRUST CORP | 5.7M | $56.8M | 0.0% | 0.8% | +5.0% |
| 17 | Freestone Grove Partners LP | 5.7M | $56.6M | 0.4% | 0.8% | +104.7% |
| 18 | UBS Group AG | 5.7M | $56.2M | 0.0% | 0.8% | +55.0% |
| 19 | AMERIPRISE FINANCIAL INC | 5.5M | $54.7M | 0.0% | 0.8% | +34.2% |
| 20 | NATIXIS ADVISORS, LLC | 4.9M | $48,970 | 0.1% | 0.7% | +94.6% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 4.3M | $42.8M | 0.0% | 0.6% | +2.2% |
| 22 | Bank of New York Mellon Corp | 4.1M | $40.8M | 0.0% | 0.6% | -6.7% |
| 23 | JONES FINANCIAL COMPANIES LLLP | 4.1M | $42.4M | 0.0% | 0.6% | +76.8% |
| 24 | Quantinno Capital Management LP | 2.4M | $24.2M | 0.0% | 0.4% | +108.9% |
| 25 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2.0M | $20.1M | 0.0% | 0.3% | -5.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.