AVTR — AVANTOR INC

Ownership history in Prosight Management, LP  ·  2 quarters on record

This page tracks every 13F SEC filing in which Prosight Management, LP reported a position in AVANTOR INC (AVTR). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
2.13% (2025 Q4)
Avg. % of fund
1.71%
First filed
2022 Q3
Last filed
2025 Q4
Quarters held
2
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 898,499 +775,831 +632.5% 2.13% $10.3M $11.46
2022 Q3 INITIATED 122,668 — — 1.29% $2.4M $19.60
% of Fund (quarterly)    AVTR price (monthly, adj. close)

Other funds also holding AVTR

As of 2025 Q4 — sorted by position size

New Mountain Capital, L.L.C. 3Y 100.0% Engine Capital Management, LP 3Y 7Y 18.87% Belfer Management LLC 3Y 7Y 4.74% Clarkston Capital Partners, LLC 3Y 7Y 4.01% GREENHAVEN ASSOCIATES INC 3Y 7Y 3.81% Circumference Group LLC 3.77% Sapience Investments, LLC 3Y 7Y 2.44% Voss Capital, LP 3Y 2.26% Olstein Capital Management, L.P. 3Y 7Y 1.92% Robeco Schweiz AG 3Y 7Y 1.87%
← Back to Prosight Management, LP Holdings