ATI ATI INC: institutional ownership and insider trading
858 funds reported holding $27.0B of ATI INC in their latest 13F filings; in Q2 2026 funds net bought $34.5M, with 166 new positions and 53 funds selling out; over the last 12 months insiders bought $0 and sold $82.6M on the open market.
Famous investors holding ATI
- Andreas Halvorsen (Viking Global Investors): $227M, 0.7% of the portfolio
- George Soros (Soros Fund Management): $14.5M, 0.2% of the portfolio
- Two Sigma (Two Sigma Investments): $128M, 0.1% of the portfolio
- Ray Dalio (Bridgewater Associates): $22.7M, 0.1% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $164M, 0.1% of the portfolio
- Izzy Englander (Millennium Management): $174M, 0.1% of the portfolio
- Ken Griffin (Citadel Advisors): $130M, 0.0% of the portfolio
- Cathie Wood (ARK Investment Management): $96.0K, 0.0% of the portfolio
Largest institutional holders of ATI
- BlackRock, Inc. (BLK) — $3.69B
- VANGUARD GROUP INC — $1.46B
- VANGUARD PORTFOLIO MANAGEMENT LLC — $1.23B
- VANGUARD CAPITAL MANAGEMENT LLC — $1.21B
- Capital World Investors — $1.03B
- STATE STREET CORP (STT, STT-PG) — $1.03B
- Capital Research Global Investors — $1.00B
- FMR LLC — $983M
- Capital International Investors — $733M
- Invesco Ltd. (IVZ) — $680M
Recent ATI insider trades
- Sep 21, 2026: Harris Timothy J sold 9,000 shares ($1.73M)
- Sep 14, 2026: Harris Timothy J sold 16,500 shares ($3.19M)
- Sep 8, 2026: Harris Timothy J sold 16,500 shares ($3.42M)
- Sep 2, 2026: Morehouse David J sold 2,485 shares ($501K)
5%+ owners
- Vanguard Capital Management: 5.2% (Schedule 13G, filed Apr 29, 2026)