AVTR — AVANTOR INC

Ownership history in CSS LLC/IL  ·  2 quarters on record

This page tracks every 13F SEC filing in which CSS LLC/IL 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
0.03% (2025 Q3)
Avg. % of fund
0.03%
First filed
2025 Q2
Last filed
2025 Q3
Quarters held
2
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 ADDED 62,423 +17,568 +39.2% 0.03% $779K $12.48
2025 Q2 INITIATED 44,855 — — 0.03% $604K $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% 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% Prosight Management, LP 3Y 7Y 2.13% Olstein Capital Management, L.P. 3Y 7Y 1.92%
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