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Which hedge funds own ATI? ATI INC, Q2 2026 13F holders

IndustrialsMetal Fabrication

90 tracked hedge funds disclosed a position in ATI (ATI INC) in their Q2 2026 13F filings, worth $3.5bn in total. The largest holder by portfolio weight is Square Wave Capital, LLC at 13.1% of its book. 16 opened a new position this quarter: Oribel Capital Management, LP, Cannon Global Investment Management, LLC, Polen Capital, Yaupon Capital Management LP. 11 exited: Dayah Capital LLC, Anomaly Capital Management, LP, Dockside LLC.

90
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
16
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
11
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$263m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$36.0m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$3.5bn
Combined value
Sum of the holders' reported positions in the security.
7.3%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

90 rows
Square Wave Capital, LLC Hedge fund13.1%$87.7m444,800+21%added
Dendur Capital LP Hedge fund11.6%$199m1.01m−21%reduced
FACT Capital, LP Hedge fund11.0%$19.6m99,684−3.3%reduced
Mountaineer Partners Management, LLC Hedge fund8.8%$11.9m60,419−34%reduced
Jones Road Capital Management, L.P. Hedge fund5.4%$986k5,000−50%reduced
Candelo Capital Management LP Hedge fund4.0%$5.4m27,649−1.8%reduced
H Squared Management LP Hedge fund3.9%$6.1m31,200−14%reduced
Tribune Investment Group LP Hedge fund3.9%$5.8m29,380−8.2%reduced
Expect Equity LLC Hedge fund2.9%$4.5m22,645−13%reduced
Pinnbrook Capital Management LP Hedge fund2.7%$16.2m82,081+1090%added
S Squared Technology, LLC Hedge fund2.4%$7.9m40,000−27%reduced
Oribel Capital Management, LP Hedge fund1.6%$19.0m96,500–new
Cannon Global Investment Management, LLC Hedge fund1.5%$493k2,500–new
Polen Capital Long-only investor1.4%$161m819,236–new
Dymon Asia Capital (Singapore) Pte. Ltd. Hedge fund1.3%$8.3m41,920+81%added
Gallo Partners, LP Hedge fund1.3%$586k2,974−69%reduced
Hawk Ridge Capital Management LP Hedge fund1.3%$40.3m204,700+10%added
Aventail Capital Group, LP Hedge fund1.3%$21.9m110,892−40%reduced
Yaupon Capital Management LP Hedge fund1.2%$35.5m180,204–new
Marathon Partners Equity Management, LLC Hedge fund1.2%$1.2m6,000−66%reduced
SG Capital Management LLC Hedge fund1.0%$11.5m58,279–new
Keystone Investors Pte Ltd Hedge fund1.0%$17.9m90,612+171%added
Freestone Grove Partners LP Hedge fund0.8%$116m587,093+1.9%added
Viking Global Investors LP Hedge fund0.6%$227m1.15m−65%reduced
KR Capital LP Hedge fund0.6%$6.4m32,325–new
Senator Investment Group LP Hedge fund0.6%$15.8m80,000−45%reduced
Voleon Capital Management LP Hedge fund0.6%$30.4m154,311+56%added
Qube Research & Technologies Ltd Hedge fund0.5%$423m2.14m+150%added
Rokos Capital Management LLP Hedge fund0.4%$35.7m180,935+125%added
Concentric Capital Strategies, LP Hedge fund0.4%$6.3m32,008–new
Aquatic Capital Management LLC Hedge fund0.4%$11.0m55,786+38%added
Point72 Asset Management, L.P. Hedge fund0.4%$244m1.24m−36%reduced
Entropy Technologies, LP Hedge fund0.4%$9.0m45,851+141%added
Brevan Howard Capital Management LP Hedge fund0.3%$23.2m117,553+87%added
Fox Run Management, L.L.C. Hedge fund0.3%$1.8m9,361+14%added
AlphaGrep UK Ltd Hedge fund0.3%$931k4,725–new
Occudo Quantitative Strategies LP Hedge fund0.3%$5.0m25,281−23%reduced
Old West Investment Management, LLC Hedge fund0.3%$2.5m12,5550.0%held
Twin Tree Management, LP Hedge fund0.2%$1.6m8,097−46%reduced
Oak Thistle LLC Hedge fund0.2%$2.3m11,879−1.8%reduced
Holocene Advisors, LP Hedge fund0.2%$98.1m497,600−55%reduced
Engineers Gate Manager LP Hedge fund0.2%$17.2m87,049+26%added
Quantbot Technologies LP Hedge fund0.2%$5.4m27,156+26%added
Jupiter Asset Management Ltd Hedge fund0.2%$39.9m202,574−41%reduced
Campbell & CO Investment Adviser LLC Hedge fund0.2%$3.7m18,559+255%added
Soros Fund Management Family office0.2%$14.5m73,339+39%added
Machina Capital S.A.S. Hedge fund0.2%$1.2m5,976+215%added
Balyasny Asset Management L.P. Hedge fund0.2%$101m514,088−40%reduced
Schonfeld Strategic Advisors LLC Hedge fund0.2%$35.0m177,751+655%added
Catalyst Funds Management Pty Ltd Hedge fund0.2%$3.1m15,800+7.2%added