AVTR — AVANTOR INC

Ownership history in Engine Capital Management, LP  ·  3 quarters on record

This page tracks every 13F SEC filing in which Engine Capital 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
29.22% (2025 Q3)
Avg. % of fund
21.25%
First filed
2025 Q2
Last filed
2025 Q4
Quarters held
3
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 11,927,812 -7,792,618 -39.5% 18.87% $136.7M $11.46
2025 Q3 ADDED 19,720,430 +14,216,121 +258.3% 29.22% $246.1M $12.48
2025 Q2 INITIATED 5,504,309 — — 15.65% $74.1M $13.46
% 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% 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% Prosight Management, LP 3Y 7Y 2.13% Olstein Capital Management, L.P. 3Y 7Y 1.92% Robeco Schweiz AG 3Y 7Y 1.87%
← Back to Engine Capital Management, LP Holdings