466 institutions reported holding $4.89B of NEWMARKET CORP (NEU) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($652.4M), BlackRock, Inc. ($556.3M), LONDON CO OF VIRGINIA ($386.5M), Boston Partners ($256.0M), AQR CAPITAL MANAGEMENT LLC ($213.6M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30