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 |
|---|---|---|---|---|---|
| BI Asset Management Fondsmaeglerselskab A/S | 34,944 | $2.84M | 0.03% | +34,944 | New |
| Capstone Investment Advisors, LLC | 35,066 | $2.85M | 0.02% | +4,066+13.1% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,374 | $2.88M | 0.01% | −871−2.4% | Reduced |
| Rafferty Asset Management, LLC | 35,814 | $2.91M | 0.01% | −3,208−8.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 36,562 | $2.97M | 0.01% | +36,562 | New |
| New Age Alpha Advisors, LLC | 36,650 | $2.98M | 0.13% | −1,130−3.0% | Reduced |
| Cookson Peirce & Co Inc | 36,972 | $3.01M | 0.12% | +36,972 | New |
| Register Financial Advisors LLC | 37,353 | $3.04M | 1.20% | +1,500+4.2% | Added |
| Cinctive Capital Management LP | 38,328 | $3.12M | 0.16% | +38,328 | New |
| Louisiana State Employees Retirement System | 38,400 | $3.12M | 0.05% | −1,300−3.3% | Reduced |
| Epoch Investment Partners, Inc. | 38,880 | $3.16M | 0.02% | +38,880 | New |
| Voya Investment Management LLC | 39,583 | $3.22M | 0.00% | −11,570−22.6% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 39,682 | $3.23M | 0.01% | +8,532+27.4% | Added |
| 1492 Capital Management LLC | 40,310 | $3.28M | 1.33% | +20,556+104.1% | Added |
| Graphene Investments SAS | 40,400 | $3.29M | 2.08% | +3,500+9.5% | Added |
| Arizona State Retirement System | 41,743 | $3.40M | 0.02% | +576+1.4% | Added |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 42,400 | $3.45M | 1.39% | +42,400 | New |
| Yousif Capital Management, LLC | 43,835 | $3.57M | 0.04% | −4,184−8.7% | Reduced |
| Farmers & Merchants Investments Inc | 44,307 | $3.60M | 0.10% | −3,502−7.3% | Reduced |
| Public Employees Retirement System of Ohio | 44,552 | $3.62M | 0.01% | +357+0.8% | Added |
| Asset Management One Co.,Ltd. | 45,184 | $3.66M | 0.01% | +45,184 | New |
| Verition Fund Management LLC | 45,499 | $3.70M | 0.02% | +5,629+14.1% | Added |
| Magnetar Financial LLC | 45,664 | $3.71M | 0.02% | +45,664 | New |
| The PNC Financial Services Group, Inc. | 46,015 | $3.74M | 0.00% | −11,842−20.5% | Reduced |
| Thrivent Financial for Lutherans | 46,122 | $3.75M | 0.01% | −14,657−24.1% | Reduced |
| Roubaix Capital, LLC | 46,543 | $3.79M | 1.76% | −14,090−23.2% | Reduced |
| Pathstone Holdings, LLC | 48,084 | $3.91M | 0.01% | +270+0.6% | Added |
| State of New Jersey Common Pension Fund D | 49,462 | $4.02M | 0.01% | +1,156+2.4% | Added |
| Van Eck Associates Corp | 50,925 | $4.14M | 0.00% | +14,015+38.0% | Added |
| Intech Investment Management LLC | 52,090 | $4.24M | 0.04% | +25,590+96.6% | Added |
| Comerica Bank | 55,217 | $4.49M | 0.02% | −60,235−52.2% | Reduced |
| Covea Finance | 55,300 | $4.50M | 0.16% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 55,552 | $4.52M | 0.00% | +5,910+11.9% | Added |
| Squarepoint Ops LLC | 58,167 | $4.73M | 0.01% | +58,167 | New |
| Warren Averett Asset Management, LLC | 59,134 | $4.81M | 0.05% | −14,776−20.0% | Reduced |
| Jefferies Financial Group Inc. | 59,340 | $4.83M | 0.04% | +1,275+2.2% | Added |
| Janus Henderson Group PLC | 60,354 | $4.91M | 0.00% | 00.0% | Unchanged |
| Candelo Capital Management LP | 60,896 | $4.95M | 4.43% | −19,377−24.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 61,770 | $5.02M | 0.04% | +8,544+16.1% | Added |
| Treasurer of the State of North Carolina | 62,879 | $5.12M | 0.02% | −2,454−3.8% | Reduced |
| Amalgamated Bank | 63,020 | $5.13M | 0.04% | −1,047−1.6% | Reduced |
| State of Tennessee, Treasury Department | 63,107 | $5.13M | 0.02% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 63,655 | $5.18M | 0.05% | −6,500−9.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 65,861 | $5.36M | 0.01% | +26,640+67.9% | Added |
| Assenagon Asset Management S.A. | 67,633 | $5.50M | 0.01% | +53,120+366.0% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 68,245 | $5.55M | 0.03% | +68,245 | New |
| Sagefield Capital LP | 69,557 | $5.66M | 0.63% | +57,915+497.5% | Added |
| MetLife Investment Management | 70,876 | $5.77M | 0.03% | −5,066−6.7% | Reduced |
| Teachers Retirement System of the State of Kentucky | 71,217 | $5.79M | 0.04% | +4,230+6.3% | Added |
| Globeflex Capital L P | 72,081 | $5.86M | 0.90% | +20,524+39.8% | Added |
| Susquehanna Fundamental Investments, LLC | 72,711 | $5.91M | 0.23% | +72,711 | New |
| Natixis Advisors, L.P. | 75,923 | $6.18M | 0.01% | +274+0.4% | Added |
| NEOS Investment Management LLC | 76,016 | $6.18M | 0.05% | +5,362+7.6% | Added |
| Tema ETFs LLC | 76,016 | $6.18M | 0.51% | +5,362+7.6% | Added |
| LPL Financial LLC | 76,774 | $6.24M | 0.00% | +21,392+38.6% | Added |
| Capital Group Private Client Services, Inc. | 76,850 | $6.25M | 0.10% | −270,177−77.9% | Reduced |
| Sanctuary Advisors, LLC | 81,636 | $6.64M | 0.04% | +81,636 | New |
| Mengis Capital Management, Inc. | 81,807 | $6.65M | 1.31% | +1,080+1.3% | Added |
| Jones Road Capital Management, L.P. | 82,700 | $6.73M | 7.11% | −17,177−17.2% | Reduced |
| First Trust Advisors LP | 84,027 | $6.83M | 0.01% | −113,187−57.4% | Reduced |
| Stifel Financial Corp | 89,456 | $7.28M | 0.01% | +14,689+19.6% | Added |
| Guggenheim Capital LLC | 89,748 | $7.30M | 0.05% | +24,254+37.0% | Added |
| Jane Street Group, LLC | 90,007 | $7.32M | 0.01% | −172,600−65.7% | Reduced |
| Citigroup Inc | 91,604 | $7.45M | 0.01% | +5,792+6.7% | Added |
| Advisors Asset Management, Inc. | 91,859 | $7.47M | 0.13% | +2,867+3.2% | Added |
| State Board of Administration of Florida Retirement System | 94,595 | $7.69M | 0.01% | +5,867+6.6% | Added |
| Winton Group Ltd | 97,499 | $7.93M | 0.30% | +91,268+1,464.7% | Added |
| Manufacturers Life Insurance Company, The | 99,178 | $8.07M | 0.01% | −6,540−6.2% | Reduced |
| FACT Capital, LP | 101,400 | $8.25M | 4.29% | +101,400 | New |
| Great West Life Assurance Co | 105,554 | $8.36M | 0.01% | +25,260+31.5% | Added |
| Discovery Capital Management, LLC | 105,100 | $8.55M | 0.47% | +105,100 | New |
| Algert Global LLC | 107,900 | $8.78M | 0.15% | −10,114−8.6% | Reduced |
| Allianz Asset Management GmbH | 109,464 | $8.90M | 0.01% | −200−0.2% | Reduced |
| Citadel Advisors LLC | 112,903 | $9.18M | 0.01% | −479,572−80.9% | Reduced |
| Deutsche Bank AG | 114,177 | $9.29M | 0.00% | +2,739+2.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 116,309 | $9.46M | 0.03% | +35,150+43.3% | Added |
| SEI Investments Co | 117,497 | $9.56M | 0.01% | −5,669−4.6% | Reduced |
| Bayberry Capital Partners LP | 124,100 | $10.1M | 2.91% | +124,100 | New |
| AQR Capital Management LLC | 129,928 | $10.4M | 0.01% | +64,986+100.1% | Added |
| Kinetic Partners Management, LP | 132,800 | $10.8M | 0.52% | −103,100−43.7% | Reduced |
| California State Teachers Retirement System | 134,094 | $10.9M | 0.01% | +1,960+1.5% | Added |
| Bridgewater Associates, LP | 136,458 | $11.1M | 0.04% | +136,458 | New |
| Royce & Associates LP | 137,462 | $11.2M | 0.11% | −25,150−15.5% | Reduced |
| Jupiter Asset Management Ltd | 137,888 | $11.2M | 0.10% | +137,888 | New |
| Signature Estate & Investment Advisors LLC | 143,711 | $11.7M | 0.25% | +143,711 | New |
| Mountaineer Partners Management, LLC | 144,020 | $11.7M | 6.81% | +21,050+17.1% | Added |
| J. Goldman & Co LP | 147,461 | $12.0M | 0.45% | +147,461 | New |
| New York State Teachers Retirement System | 150,001 | $12.2M | 0.02% | +6,573+4.6% | Added |
| Hudson Bay Capital Management LP | 154,784 | $12.6M | 0.08% | −52,019−25.2% | Reduced |
| Tudor Investment Corp Et Al | 181,797 | $14.8M | 0.10% | −409,545−69.3% | Reduced |
| Emerald Mutual Fund Advisers Trust | 183,555 | $14.9M | 0.77% | +4,300+2.4% | Added |
| Gotham Asset Management, LLC | 197,535 | $16.1M | 0.07% | −10,384−5.0% | Reduced |
| LTS One Management LP | 210,000 | $17.1M | 6.09% | −95,000−31.1% | Reduced |
| Moore Capital Management, LP | 211,002 | $17.2M | 0.34% | +48,037+29.5% | Added |
| Amundi | 207,512 | $17.4M | 0.01% | −62,891−23.3% | Reduced |
| Wells Fargo & Company | 220,107 | $17.9M | 0.00% | +2,629+1.2% | Added |
| Prudential Financial Inc | 229,312 | $18.7M | 0.02% | −73,200−24.2% | Reduced |
| Canada Pension Plan Investment Board | 236,626 | $19.2M | 0.01% | −58,474−19.8% | Reduced |
| Macquarie Group Ltd | 236,788 | $19.3M | 0.02% | −30,090−11.3% | Reduced |
| Legal & General Group Plc | 239,927 | $19.5M | 0.00% | +2,702+1.1% | Added |