Institutional shares held 125 Million
1.36M calls
1.15M puts
Total value of holdings $12.4B
$135M calls
$115M puts
Market Cap $12.9B
129,902,000 Shares Out.
Institutional ownership 96.23%
# of Institutions 529


Latest Institutional Activity in ATI

Top Purchases

Q3 2025
Capital World Investors Shares Held: 7.9M ($785M)
Q3 2025
Holocene Advisors, LP Shares Held: 1.53M ($152M)
Q3 2025
Davidson Kempner Capital Management LP Shares Held: 530K ($52.7M)
Q3 2025
Rokos Capital Management LLP Shares Held: 527K ($52.4M)
Q3 2025
Capital International Investors Shares Held: 17.1M ($1.7B)

Top Sells

Q3 2025
Ameriprise Financial Inc Shares Held: 1.31M ($131M)
Q3 2025
Frontier Capital Management CO LLC Shares Held: 1.55M ($154M)
Q3 2025
D. E. Shaw & Co., Inc. Shares Held: 3.03M ($301M)
Q3 2025
Dendur Capital LP Shares Held: 2.69M ($267M)
Q3 2025
Citadel Advisors LLC Shares Held: 113K ($11.2M)

About ATI

ATI Inc. manufactures and sells specialty materials and components worldwide. The company operates in two segments: High Performance Materials & Components (HPMC) and Advanced Alloys & Solutions (AA&S). The HPMC segment produces various materials, including titanium and titanium-based alloys, nickel- and cobalt-based alloys and superalloys, advanced powder alloys and other specialty materials, in long product forms, such as ingot, billet, bar, rod, wire, shapes and rectangles, and seamless tubes, as well as precision forgings, components, and machined parts. The segment serves aerospace and defense, medical, and energy markets. The AA&S segment produces zirconium and related alloys, including hafnium and niobium, nickel-based alloys, titanium and titanium-based alloys, and specialty alloys in a variety of forms, such as plate, sheet, and precision rolled strip products. It also provides hot-rolling conversion services, including carbon steel products, and titanium products. This segment offers its solutions to the energy, aerospace and defense, automotive, and electronics markets. The company was formerly known as Allegheny Technologies Incorporated. ATI Inc. was founded in 1960 and is headquartered in Dallas, Texas.


Insider Transactions at ATI

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
672K Shares
From 17 Insiders
Grant, award, or other acquisition 672K shares
Sell / Disposition
760K Shares
From 14 Insiders
Payment of exercise price or tax liability 291K shares
Open market or private sale 468K shares
Bona fide gift 185 shares

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