GREENHAVEN ASSOCIATES INC: AVANTOR INC (AVTR) (AVTR): Quarterly 13F Position History
As of Q3 2026, GREENHAVEN ASSOCIATES INC reported 24,359,610 shares of AVANTOR INC (AVTR) (AVTR), worth $366.6M and representing 4.6% of its 13F equity book. Quarter-over-quarter share count change: 277,700 (-1.1%) . The position first appeared in Q3 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 24,359,610Shares Held (Latest Filing)
- $366.6MReported Market Value (Latest Filing)
- 4.6%Portfolio Weight (% of 13F Equity Book)
- 277,700Quarter-over-Quarter Share Change
- +$122.7MQuarter-over-Quarter Value Change
- 24,637,310Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 5 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q3 2026 | 24,359,610 | 277,700 | -1.1% | $366.6M | 4.6% | $15.1 |
| Q2 2026 | 24,637,310 | +2,043,472 | +9.0% | $243.9M | 2.8% | $9.9 |
| Q1 2026 | 22,593,838 | +2,093,185 | +10.2% | $177.1M | 2.9% | $7.8 |
| Q4 2025 | 20,500,653 | +2,189,083 | +12.0% | $234.9M | 3.8% | $11.5 |
| Q3 2025 | 18,311,570 | – | – | $228.5M | 3.5% | $12.5 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did GREENHAVEN ASSOCIATES INC first disclose a AVTR position in 13F-HR filings?
GREENHAVEN ASSOCIATES INC first reported AVANTOR INC (AVTR) (AVTR) on its 13F-HR filing for the period ending 2025-09-30 (Q3 2025). The position has appeared on 5 reported quarters within Pactolio's tracked window.
What was GREENHAVEN ASSOCIATES INC's most recent quarter-over-quarter share-count change in AVTR?
Between Q2 2026 and Q3 2026, GREENHAVEN ASSOCIATES INC reduced its AVTR position by 277,700 shares (-1.1%), leaving 24,359,610 shares at a market value of $366.6M.
Does the implied price-per-share represent GREENHAVEN ASSOCIATES INC's cost basis in AVTR?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.