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 |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 105,554 | $8.36M | 0.01% | +25,260+31.5% | Added |
| FACT Capital, LP | 101,400 | $8.25M | 4.29% | +101,400 | New |
| Manufacturers Life Insurance Company, The | 99,178 | $8.07M | 0.01% | −6,540−6.2% | Reduced |
| Winton Group Ltd | 97,499 | $7.93M | 0.30% | +91,268+1,464.7% | Added |
| State Board of Administration of Florida Retirement System | 94,595 | $7.69M | 0.01% | +5,867+6.6% | Added |
| Advisors Asset Management, Inc. | 91,859 | $7.47M | 0.13% | +2,867+3.2% | Added |
| Citigroup Inc | 91,604 | $7.45M | 0.01% | +5,792+6.7% | Added |
| Jane Street Group, LLC | 90,007 | $7.32M | 0.01% | −172,600−65.7% | Reduced |
| Guggenheim Capital LLC | 89,748 | $7.30M | 0.05% | +24,254+37.0% | Added |
| Stifel Financial Corp | 89,456 | $7.28M | 0.01% | +14,689+19.6% | Added |
| First Trust Advisors LP | 84,027 | $6.83M | 0.01% | −113,187−57.4% | Reduced |
| Jones Road Capital Management, L.P. | 82,700 | $6.73M | 7.11% | −17,177−17.2% | Reduced |
| Mengis Capital Management, Inc. | 81,807 | $6.65M | 1.31% | +1,080+1.3% | Added |
| Sanctuary Advisors, LLC | 81,636 | $6.64M | 0.04% | +81,636 | New |
| Capital Group Private Client Services, Inc. | 76,850 | $6.25M | 0.10% | −270,177−77.9% | Reduced |
| LPL Financial LLC | 76,774 | $6.24M | 0.00% | +21,392+38.6% | 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 |
| Natixis Advisors, L.P. | 75,923 | $6.18M | 0.01% | +274+0.4% | Added |
| Susquehanna Fundamental Investments, LLC | 72,711 | $5.91M | 0.23% | +72,711 | New |
| Globeflex Capital L P | 72,081 | $5.86M | 0.90% | +20,524+39.8% | Added |
| Teachers Retirement System of the State of Kentucky | 71,217 | $5.79M | 0.04% | +4,230+6.3% | Added |
| MetLife Investment Management | 70,876 | $5.77M | 0.03% | −5,066−6.7% | Reduced |
| Sagefield Capital LP | 69,557 | $5.66M | 0.63% | +57,915+497.5% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 68,245 | $5.55M | 0.03% | +68,245 | New |
| Assenagon Asset Management S.A. | 67,633 | $5.50M | 0.01% | +53,120+366.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 65,861 | $5.36M | 0.01% | +26,640+67.9% | Added |
| Mutual of America Capital Management LLC | 63,655 | $5.18M | 0.05% | −6,500−9.3% | Reduced |
| State of Tennessee, Treasury Department | 63,107 | $5.13M | 0.02% | 00.0% | Unchanged |
| Amalgamated Bank | 63,020 | $5.13M | 0.04% | −1,047−1.6% | Reduced |
| Treasurer of the State of North Carolina | 62,879 | $5.12M | 0.02% | −2,454−3.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 61,770 | $5.02M | 0.04% | +8,544+16.1% | Added |
| Candelo Capital Management LP | 60,896 | $4.95M | 4.43% | −19,377−24.1% | Reduced |
| Janus Henderson Group PLC | 60,354 | $4.91M | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 59,340 | $4.83M | 0.04% | +1,275+2.2% | Added |
| Warren Averett Asset Management, LLC | 59,134 | $4.81M | 0.05% | −14,776−20.0% | Reduced |
| Squarepoint Ops LLC | 58,167 | $4.73M | 0.01% | +58,167 | New |
| Envestnet Asset Management Inc | 55,552 | $4.52M | 0.00% | +5,910+11.9% | Added |
| Covea Finance | 55,300 | $4.50M | 0.16% | 00.0% | Unchanged |
| Comerica Bank | 55,217 | $4.49M | 0.02% | −60,235−52.2% | Reduced |
| Intech Investment Management LLC | 52,090 | $4.24M | 0.04% | +25,590+96.6% | Added |
| Van Eck Associates Corp | 50,925 | $4.14M | 0.00% | +14,015+38.0% | Added |
| State of New Jersey Common Pension Fund D | 49,462 | $4.02M | 0.01% | +1,156+2.4% | Added |
| Pathstone Holdings, LLC | 48,084 | $3.91M | 0.01% | +270+0.6% | Added |
| Roubaix Capital, LLC | 46,543 | $3.79M | 1.76% | −14,090−23.2% | Reduced |
| Thrivent Financial for Lutherans | 46,122 | $3.75M | 0.01% | −14,657−24.1% | Reduced |
| The PNC Financial Services Group, Inc. | 46,015 | $3.74M | 0.00% | −11,842−20.5% | Reduced |
| Magnetar Financial LLC | 45,664 | $3.71M | 0.02% | +45,664 | New |
| Verition Fund Management LLC | 45,499 | $3.70M | 0.02% | +5,629+14.1% | Added |
| Asset Management One Co.,Ltd. | 45,184 | $3.66M | 0.01% | +45,184 | New |
| Public Employees Retirement System of Ohio | 44,552 | $3.62M | 0.01% | +357+0.8% | Added |
| Farmers & Merchants Investments Inc | 44,307 | $3.60M | 0.10% | −3,502−7.3% | Reduced |
| Yousif Capital Management, LLC | 43,835 | $3.57M | 0.04% | −4,184−8.7% | Reduced |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 42,400 | $3.45M | 1.39% | +42,400 | New |
| Arizona State Retirement System | 41,743 | $3.40M | 0.02% | +576+1.4% | Added |
| Graphene Investments SAS | 40,400 | $3.29M | 2.08% | +3,500+9.5% | Added |
| 1492 Capital Management LLC | 40,310 | $3.28M | 1.33% | +20,556+104.1% | Added |
| Envestnet Portfolio Solutions, Inc. | 39,682 | $3.23M | 0.01% | +8,532+27.4% | Added |
| Voya Investment Management LLC | 39,583 | $3.22M | 0.00% | −11,570−22.6% | Reduced |
| Epoch Investment Partners, Inc. | 38,880 | $3.16M | 0.02% | +38,880 | New |
| Louisiana State Employees Retirement System | 38,400 | $3.12M | 0.05% | −1,300−3.3% | Reduced |
| Cinctive Capital Management LP | 38,328 | $3.12M | 0.16% | +38,328 | New |
| Register Financial Advisors LLC | 37,353 | $3.04M | 1.20% | +1,500+4.2% | Added |
| Cookson Peirce & Co Inc | 36,972 | $3.01M | 0.12% | +36,972 | New |
| New Age Alpha Advisors, LLC | 36,650 | $2.98M | 0.13% | −1,130−3.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 36,562 | $2.97M | 0.01% | +36,562 | New |
| Rafferty Asset Management, LLC | 35,814 | $2.91M | 0.01% | −3,208−8.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,374 | $2.88M | 0.01% | −871−2.4% | Reduced |
| Capstone Investment Advisors, LLC | 35,066 | $2.85M | 0.02% | +4,066+13.1% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 34,944 | $2.84M | 0.03% | +34,944 | New |
| Teacher Retirement System of Texas | 33,049 | $2.69M | 0.01% | +1,118+3.5% | Added |
| Susquehanna International Group, LLP | 32,911 | $2.68M | 0.00% | +17,090+108.0% | Added |
| State of Michigan Retirement System | 32,800 | $2.67M | 0.01% | −1,100−3.2% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 32,122 | $2.61M | 0.00% | +6,753+26.6% | Added |
| Northwestern Mutual Investment Management Company, LLC | 30,722 | $2.50M | 0.04% | −774−2.5% | Reduced |
| Los Angeles Capital Management LLC | 30,615 | $2.49M | 0.01% | −5,174−14.5% | Reduced |
| KLP Kapitalforvaltning AS | 29,400 | $2.39M | 0.01% | +400+1.4% | Added |
| Kovitz Investment Group Partners, LLC | 28,979 | $2.36M | 0.01% | +28,979 | New |
| New Mexico Educational Retirement Board | 28,800 | $2.34M | 0.07% | 00.0% | Unchanged |
| Man Group plc | 28,521 | $2.32M | 0.00% | +21,009+279.7% | Added |
| Janney Montgomery Scott LLC | 27,880 | $2.27M | 0.01% | −2,525−8.3% | Reduced |
| Oregon Public Employees Retirement Fund | 27,763 | $2.26M | 0.03% | −1,100−3.8% | Reduced |
| Marathon Partners Equity Management, LLC | 27,500 | $2.24M | 1.78% | +27,500 | New |
| Bank of Montreal | 27,253 | $2.22M | 0.00% | −6,395−19.0% | Reduced |
| HSBC Holdings PLC | 27,263 | $2.20M | 0.00% | −8,421−23.6% | Reduced |
| HighTower Advisors, LLC | 26,568 | $2.16M | 0.00% | +2,456+10.2% | Added |
| Ensign Peak Advisors, Inc | 26,141 | $2.13M | 0.00% | −12,800−32.9% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 26,133 | $2.13M | 0.03% | +26,133 | New |
| Ameritas Investment Partners, Inc. | 26,067 | $2.12M | 0.06% | −1,553−5.6% | Reduced |
| Gallo Partners, LP | 25,911 | $2.11M | 1.58% | +25,911 | New |
| Quantinno Capital Management LP | 25,179 | $2.05M | 0.01% | +13,404+113.8% | Added |
| Credit Agricole S A | 25,059 | $2.04M | 0.01% | +25,059 | New |
| OP Asset Management Ltd | 23,566 | $1.92M | 0.03% | +5,315+29.1% | Added |
| Huntington National Bank | 23,442 | $1.91M | 0.01% | +192+0.8% | Added |
| Northwestern Mutual Wealth Management Co | 23,274 | $1.89M | 0.00% | +5,689+32.4% | Added |
| IMC-Chicago, LLC | 22,509 | $1.83M | 0.03% | +22,509 | New |
| Jain Global LLC | 21,339 | $1.74M | 0.02% | +21,339 | New |
| Victory Capital Management Inc | 20,717 | $1.69M | 0.00% | −2,666−11.4% | Reduced |
| Creative Planning | 20,584 | $1.67M | 0.00% | −2,074−9.2% | Reduced |
| Pictet Asset Management Holding SA | 20,233 | $1.65M | 0.00% | −1,737−7.9% | Reduced |