Avantor, Inc. (AVTR) ownership: Top institutional holder: Dodge & Cox ($938.04M). Insider activity: Net Seller (1 buys, 19 sells). 9 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Dodge & Cox | 119648329.00 | $938.04M | 2026-03-31 |
| VANGUARD GROUP INC | 64904889.00 | $743.81M | 2025-12-31 |
| BlackRock, Inc. | 65703554.00 | $515.12M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31275847.00 | $245.20M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 30606112.00 | $239.95M | 2026-03-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 24224156.00 | $189.92M | 2026-03-31 |
| GREENHAVEN ASSOCIATES INC | 22593838.00 | $177.14M | 2026-03-31 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 22358399.00 | $175.29M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Buy | null | 2026-05-07 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.