# 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: 2026-08-29T13:45:21.323Z

## Summary

As of the most recent 13F filing period, Avantor, Inc. (AVTR) is held by 7 tracked superinvestors with an aggregate position value of $1.62B representing 0120020974246373108190740477000047254781210000301219 shares.

## Top institutional holders (7)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Dodge & Cox](https://superinvestorclub.com/manager/16) | Dodge & Cox | 120020974 | $1.19B | 0.62% | 2026-06-30 |
| 2 | [Edgar Wachenheim](https://superinvestorclub.com/manager/94) | Greenhaven Associates | 24637310 | $243.9M | 2.82% | 2026-06-30 |
| 3 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 8190740 | $81.1M | 1.00% | 2026-06-30 |
| 4 | [Donald Yacktman](https://superinvestorclub.com/manager/13) | Yacktman Asset Management | 4770000 | $47.2M | 0.58% | 2026-06-30 |
| 5 | [Longleaf Partners](https://superinvestorclub.com/manager/15) | Southeastern Asset Management | 4725478 | $46.8M | 2.44% | 2026-06-30 |
| 6 | [Robert Olstein](https://superinvestorclub.com/manager/80) | Olstein Capital Management | 1210000 | $9.5M | 2.07% | 2026-03-31 |
| 7 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 301219 | $3.0M | 0.01% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 2 holders, $635,590 aggregate, 01603914905 shares
- 2023-09-30: 1 holders, $334,792 aggregate, 015882 shares
- 2023-12-31: 2 holders, $1.40B aggregate, 06119633115882 shares
- 2024-03-31: 5 holders, $1.85B aggregate, 06368030684993522941841588210053 shares
- 2024-06-30: 6 holders, $1.60B aggregate, 065364190603784536043452911841848210053 shares
- 2024-09-30: 5 holders, $2.07B aggregate, 0684180977992098352210923500020582 shares
- 2024-12-31: 5 holders, $2.30B aggregate, 0991457704809948468153535600019582 shares
- 2025-03-31: 4 holders, $1.70B aggregate, 0100262723417235256800012082 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, 0119648329225938388089023474500035202121210000128209100814 shares

## Recent congressional trades (11)

- 2025-08-13: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-08-13: Gilbert Cisneros (D-CA) sale $1,001 - $15,000
- 2025-08-12: Gilbert Cisneros (D-CA) sale $1,001 - $15,000
- 2025-08-12: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-07-23: Gilbert Cisneros (D-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."