840 institutions reported holding $25.65B of ATI INC (ATI) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($3.69B), VANGUARD GROUP INC ($2.65B), Capital World Investors ($1.03B), STATE STREET CORP ($1.03B), Capital Research Global Investors ($1.00B). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30