Olstein Capital Management, L.P. — AVANTOR INC AVTR: Quarterly 13F Position History
Olstein Capital Management, L.P. has reported AVANTOR INC (AVTR) on 13 13F-HR filings in Pactolio's tracked window, first appearing in Q1 2023. As of Q1 2026, the position is sized at 1,210,000 shares ($9.5M market value, 2.07% of the equity book). Quarter-over-quarter share count change: + 392,000 (+47.9%) .
- 1,210,000Shares Held (Latest Filing)
- $9.5MReported Market Value (Latest Filing)
- 2.07%Portfolio Weight (% of 13F Equity Book)
- +392,000Quarter-over-Quarter Share Change
- +$112.0KQuarter-over-Quarter Value Change
- 1,210,000Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 13 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,210,000 | +392,000 | +47.9% | $9.5M | 2.07% | $7.84 |
| Q4 2025 | 818,000 | +24,000 | +3.0% | $9.4M | 1.92% | $11.46 |
| Q3 2025 | 794,000 | +115,000 | +16.9% | $9.9M | 1.87% | $12.48 |
| Q2 2025 | 679,000 | +111,000 | +19.5% | $9.1M | 1.71% | $13.46 |
| Q1 2025 | 568,000 | +212,000 | +59.6% | $9.2M | 1.69% | $16.21 |
| Q4 2024 | 356,000 | +121,000 | +51.5% | $7.5M | 1.32% | $21.07 |
| Q3 2024 | 235,000 | 56,184 | -19.3% | $6.1M | 1.03% | $25.87 |
| Q2 2024 | 291,184 | 3,000 | -1.0% | $6.2M | 1.10% | $21.20 |
| Q1 2024 | 294,184 | 20,816 | -6.6% | $7.5M | 1.23% | $25.57 |
| Q4 2023 | 315,000 | +9,000 | +2.9% | $7.2M | 1.21% | $22.83 |
| Q3 2023 | 306,000 | 0 | — | $6.5M | 1.11% | $21.08 |
| Q2 2023 | 306,000 | +165,000 | +117.0% | $6.3M | 1.02% | $20.54 |
| Q1 2023 | 141,000 | — | — | $3.0M | 0.47% | $21.14 |
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, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Olstein Capital Management, L.P. first disclose a AVTR position in 13F-HR filings?
Olstein Capital Management, L.P. first reported AVANTOR INC (AVTR) on its 13F-HR filing for the period ending 2023-03-31 (Q1 2023). The position has appeared on 13 reported quarters within Pactolio's tracked window.
What was Olstein Capital Management, L.P.'s most recent quarter-over-quarter share-count change in AVTR?
Between Q4 2025 and Q1 2026, Olstein Capital Management, L.P. added 392,000 shares of AVTR (+47.9%), bringing the total reported position to 1,210,000 shares at a market value of $9.5M.
Does the implied price-per-share represent Olstein Capital Management, L.P.'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.