Who Owns AVANTOR INC (AVTR-PA)? -- Institutional Holders (2026-06-30)

3 institutions reported holding $6.0M of AVANTOR INC (AVTR-PA) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($3.2M), GROUP ONE TRADING LLC ($1.5M), IMC-Chicago, LLC ($1.4M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1SIMPLEX TRADING, LLC$3.2M319,200Added
2GROUP ONE TRADING LLC$1.5M149,400Added
3IMC-Chicago, LLC$1.4M139,800Added

Source: SEC Form 13F filings · as of 2026-06-30