# Avantor, Inc. (AVTR) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 05352A100
Page URL: https://superinvestorclub.com/stock/AVTR
Last updated: 2026-07-08T11:37:25.426Z

## Summary

As of the most recent 13F filing period, Avantor, Inc. (AVTR) is held by 7 tracked superinvestors with an aggregate position value of $1.25B representing 011964832922593838808902347450003520212128209100814 shares.

## Top institutional holders (7)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Dodge & Cox](https://superinvestorclub.com/manager/16) | Dodge & Cox | 119648329 | $938.0M | 0.52% | 2026-03-31 |
| 2 | [Edgar Wachenheim](https://superinvestorclub.com/manager/94) | Greenhaven Associates | 22593838 | $177.1M | 2.92% | 2026-03-31 |
| 3 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 8089023 | $63.4M | 0.89% | 2026-03-31 |
| 4 | [Donald Yacktman](https://superinvestorclub.com/manager/13) | Yacktman Asset Management | 4745000 | $37.2M | 0.50% | 2026-03-31 |
| 5 | [Longleaf Partners](https://superinvestorclub.com/manager/15) | Southeastern Asset Management | 3520212 | $27.6M | 1.36% | 2026-03-31 |
| 6 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 128209 | $1.0M | 0.00% | 2026-03-31 |
| 7 | [Lee Ainslie](https://superinvestorclub.com/manager/58) | Maverick Capital | 100814 | $790,382 | 0.01% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2023-12-31: 1 holders, $1.40B aggregate, 061196331 shares
- 2024-03-31: 3 holders, $1.85B aggregate, 0636803068499352294184 shares
- 2024-06-30: 4 holders, $1.60B aggregate, 06536419060378453604345291184 shares
- 2024-09-30: 4 holders, $2.07B aggregate, 06841809779920983522109235000 shares
- 2024-12-31: 4 holders, $2.30B aggregate, 09914577048099484681535356000 shares
- 2025-03-31: 3 holders, $1.70B aggregate, 01002627234172352568000 shares
- 2025-06-30: 3 holders, $1.59B aggregate, 011743348467900075000 shares
- 2025-09-30: 5 holders, $1.82B aggregate, 01177468881831157051494204070978794000 shares
- 2025-12-31: 5 holders, $1.67B aggregate, 01170651432050065339686203548518818000 shares
- 2026-03-31: 8 holders, $1.25B aggregate, 0119648329225938388089023474500035202121282091008141210000 shares

## Recent congressional trades (8)

- 2025-08-13: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-08-12: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-07-23: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-06-17: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-06-11: Lisa McClain (Republican-MI) purchase $1,001 - $15,000
- 2024-11-14: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2024-11-13: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2024-11-08: Ro Khanna (Democrat-CA) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "Avantor, Inc. (AVTR) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/AVTR), aggregating SEC 13F, Form 4, and congressional disclosures."