Ati Inc
ATI- Exchange
- NYSE
- Industry
- Steel Pipe & Tubes
- SEC CIK
- 0001018963
In the last 90 days, Ati Inc insiders filed 0 open-market purchases and 9 sales; 795 institutions reported holding it in 13F filings for Q2 2026, worth $25.1B in total; 3 superinvestors hold it, including Viking Global Investors and Soros Fund Management.
13F holders, Q3 2025
Institutional positions in Ati Inc as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 470
- +3 vs. Q2 2025
- Shares held
- 128.8M
- −3.45M (−2.6%) vs. Q2 2025
- Total value
- $10.5B
- −$931.7M (−8.2%) vs. Q2 2025
- New holders
- 90
- 152 more added
- Sold out
- 87
- 154 more reduced
6 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 795 | $25.1B |
| Q1 2026 | 678 | $18.5B |
| Q4 2025 | 570 | $14.7B |
| Q3 2025 | 470 | $10.5B |
| Q2 2025 | 473 | $11.6B |
| Q1 2025 | 426 | $6.97B |
| Q4 2024 | 403 | $7.51B |
| Q3 2024 | 421 | $8.89B |
| Q2 2024 | 403 | $7.33B |
| Q1 2024 | 345 | $6.89B |
| Q4 2023 | 349 | $6.10B |
| Q3 2023 | 338 | $5.48B |
| Q2 2023 | 329 | $5.95B |
| Q1 2023 | 339 | $5.29B |
| Q4 2022 | 304 | $3.95B |
| Q3 2022 | 290 | $3.49B |
| Q2 2022 | 266 | $3.02B |
| Q1 2022 | 284 | $3.51B |
| Q4 2021 | 241 | $2.10B |
| Q3 2021 | 236 | $2.21B |
| Q2 2021 | 237 | $2.77B |
| Q1 2021 | 234 | $2.72B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Ati Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| California Public Employees Retirement System | 257,675 | $21.0M | 0.01% | +74,571+40.7% | Added |
| Renaissance Technologies LLC | 259,992 | $21.1M | 0.03% | −221,700−46.0% | Reduced |
| Keystone Investors Pte Ltd | 261,280 | $21.3M | 2.46% | +144,441+123.6% | Added |
| State of Wisconsin Investment Board | 262,411 | $21.3M | 0.05% | −4,869−1.8% | Reduced |
| Bank of Nova Scotia | 265,053 | $21.6M | 0.04% | +26,816+11.3% | Added |
| Alliancebernstein L.P. | 271,768 | $22.1M | 0.01% | +70,740+35.2% | Added |
| Swiss National Bank | 273,400 | $22.2M | 0.01% | +3,800+1.4% | Added |
| Hawk Ridge Capital Management LP | 274,600 | $22.3M | 1.06% | +83,300+43.5% | Added |
| Tran Capital Management, L.P. | 289,414 | $23.5M | 2.81% | +289,414 | New |
| New York State Common Retirement Fund | 289,516 | $23.5M | 0.03% | +63,060+27.8% | Added |
| ING Groep NV | 293,513 | $23.9M | 0.13% | +101,113+52.6% | Added |
| Principal Financial Group Inc | 306,143 | $24.9M | 0.01% | −13,656−4.3% | Reduced |
| Point72 Asset Management, L.P. | 309,194 | $25.1M | 0.05% | −477,065−60.7% | Reduced |
| Retirement Systems of Alabama | 312,373 | $25.4M | 0.08% | +139,956+81.2% | Added |
| Emerald Advisers, LLC | 313,088 | $25.5M | 0.82% | −5,775−1.8% | Reduced |
| Barclays PLC | 319,691 | $26.0M | 0.01% | +182,707+133.4% | Added |
| Senator Investment Group LP | 325,000 | $26.4M | 0.98% | −425,000−56.7% | Reduced |
| JPMorgan Chase & Co | 333,191 | $27.1M | 0.00% | −100,478−23.2% | Reduced |
| Millennium Management LLC | 337,591 | $27.5M | 0.02% | +48,774+16.9% | Added |
| CI Private Wealth, LLC | 352,108 | $28.6M | 0.05% | +53,044+17.7% | Added |
| KLCM Advisors, Inc. | 353,837 | $28.8M | 2.87% | +8,574+2.5% | Added |
| UBS Asset Management Americas Inc | 360,959 | $29.4M | 0.01% | −319,952−47.0% | Reduced |
| Rhumbline Advisers | 362,218 | $29.5M | 0.02% | −7,794−2.1% | Reduced |
| Goldman Sachs Group Inc | 376,241 | $30.6M | 0.00% | −4,164−1.1% | Reduced |
| Segall Bryant & Hamill, LLC | 381,732 | $31.1M | 0.41% | +8,649+2.3% | Added |
| Gamco Investors, Inc. Et Al | 395,800 | $32.2M | 0.31% | −5,000−1.2% | Reduced |
| Capital International Inc | 414,054 | $33.7M | 0.27% | −44,271−9.7% | Reduced |
| Nuveen, LLC | 419,407 | $34.1M | 0.01% | +229+0.1% | Added |
| Schroder Investment Management Group | 459,948 | $36.5M | 0.03% | −72,889−13.7% | Reduced |
| Wellington Management Group LLP | 457,300 | $37.2M | 0.01% | −10,069−2.2% | Reduced |
| UBS Group AG | 490,473 | $39.9M | 0.01% | −336,486−40.7% | Reduced |
| Federated Hermes, Inc. | 491,849 | $40.0M | 0.07% | +43,364+9.7% | Added |
| BNP Paribas Arbitrage, SA | 500,001 | $40.7M | 0.03% | −220,223−30.6% | Reduced |
| Marshall Wace, LLP | 513,939 | $41.8M | 0.05% | +254,547+98.1% | Added |
| Rokos Capital Management LLP | 527,256 | $42.9M | 0.54% | +527,256 | New |
| Davidson Kempner Capital Management LP | 530,000 | $43.1M | 0.60% | +400,000+307.7% | Added |
| Voloridge Investment Management, LLC | 580,467 | $47.2M | 0.16% | −242,229−29.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 633,279 | $52.6M | 0.08% | +3,918+0.6% | Added |
| Bank of America Corp | 733,608 | $59.7M | 0.00% | +111,112+17.8% | Added |
| Woodline Partners LP | 747,127 | $60.8M | 0.29% | −91,494−10.9% | Reduced |
| Raymond James Financial Inc | 872,384 | $71.0M | 0.02% | −71,405−7.6% | Reduced |
| Bank of New York Mellon Corp | 917,922 | $74.7M | 0.01% | +25,622+2.9% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 922,730 | $75.1M | 0.24% | −54,541−5.6% | Reduced |
| Neuberger Berman Group LLC | 948,412 | $77.1M | 0.06% | +169,930+21.8% | Added |
| Fisher Asset Management, LLC | 957,648 | $77.9M | 0.03% | +329,668+52.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 986,592 | $80.2M | 0.13% | −11,349−1.1% | Reduced |
| Loomis Sayles & Co L P | 1,009,449 | $82.1M | 0.10% | −30,164−2.9% | Reduced |
| Price T Rowe Associates Inc | 1,074,149 | $87.4M | 0.01% | −64,437−5.7% | Reduced |
| Channing Capital Management, LLC | 1,109,160 | $90.2M | 2.38% | +282,529+34.2% | Added |
| Northern Trust Corp | 1,226,747 | $99.8M | 0.01% | −25,970−2.1% | Reduced |
| Royal Bank of Canada | 1,284,686 | $104.5M | 0.02% | +349,715+37.4% | Added |
| Ameriprise Financial Inc | 1,314,923 | $107.0M | 0.02% | −794,996−37.7% | Reduced |
| Bowen Hanes & Co Inc | 1,329,220 | $108.1M | 2.71% | −46,340−3.4% | Reduced |
| American Century Companies Inc | 1,374,432 | $111.8M | 0.06% | −11,684−0.8% | Reduced |
| Morgan Stanley | 1,414,386 | $115.0M | 0.01% | +207,175+17.2% | Added |
| Charles Schwab Investment Management Inc | 1,511,283 | $122.9M | 0.02% | +13,850+0.9% | Added |
| Holocene Advisors, LP | 1,534,114 | $124.8M | 0.29% | +929,333+153.7% | Added |
| Frontier Capital Management Co LLC | 1,554,561 | $126.4M | 1.13% | −671,163−30.2% | Reduced |
| Dimensional Fund Advisors LP | 2,142,000 | $174.2M | 0.04% | +142,696+7.1% | Added |
| Geode Capital Management, LLC | 2,444,673 | $198.9M | 0.01% | +8,757+0.4% | Added |
| Dendur Capital LP | 2,689,160 | $218.7M | 24.39% | −485,840−15.3% | Reduced |
| D. E. Shaw & Co., Inc. | 3,027,102 | $246.2M | 0.20% | −486,846−13.9% | Reduced |
| Invesco Ltd. | 3,151,914 | $256.4M | 0.04% | −144,710−4.4% | Reduced |
| Capital Research Global Investors | 3,224,970 | $262.3M | 0.05% | 00.0% | Unchanged |
| FMR LLC | 4,899,170 | $398.5M | 0.02% | +1,485,389+43.5% | Added |
| State Street Corp | 6,042,244 | $491.5M | 0.02% | +415,479+7.4% | Added |
| Capital World Investors | 7,900,572 | $642.6M | 0.09% | +1,080,201+15.8% | Added |
| Vanguard Group Inc | 13,054,247 | $1.06B | 0.02% | −276,228−2.1% | Reduced |
| BlackRock, Inc. | 14,857,455 | $1.21B | 0.02% | −89,813−0.6% | Reduced |
| Capital International Investors | 17,147,559 | $1.39B | 0.23% | +436,131+2.6% | Added |
| Palestra Capital Management LLC | 0 | $0 | 0.00% | −1,062,298−100.0% | Sold out |
| Fuller & Thaler Asset Management, Inc. | 0 | $0 | 0.00% | −911,108−100.0% | Sold out |
| Castle Hook Partners LP | 0 | $0 | 0.00% | −744,648−100.0% | Sold out |
| NorthRock Partners, LLC | 0 | $0 | 0.00% | −540,447−100.0% | Sold out |
| Forest Avenue Capital Management LP | 0 | $0 | 0.00% | −492,976−100.0% | Sold out |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 0 | $0 | 0.00% | −362,695−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −335,884−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −256,653−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −203,330−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −137,409−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −114,228−100.0% | Sold out |
| Scopus Asset Management, L.P. | 0 | $0 | 0.00% | −98,466−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −90,099−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −81,624−100.0% | Sold out |
| EAM Global Investors LLC | 0 | $0 | 0.00% | −62,549−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −61,173−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −60,633−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −55,000−100.0% | Sold out |
| Estate Counselors, LLC | 0 | $0 | 0.00% | −43,790−100.0% | Sold out |
| Albar Capital Partners LLP | 0 | $0 | 0.00% | −42,859−100.0% | Sold out |
| Buckingham Strategic Partners | 0 | $0 | 0.00% | −39,625−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −38,127−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −37,729−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −34,259−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −33,821−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −22,954−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −21,468−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −19,944−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −19,219−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −18,685−100.0% | Sold out |