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, Q4 2025
Institutional positions in Ati Inc as of Dec 31, 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
- 570
- +109 vs. Q3 2025
- Shares held
- 128.3M
- −445.7K (−0.3%) vs. Q3 2025
- Total value
- $14.7B
- +$4.26B (+40.7%) vs. Q3 2025
- New holders
- 145
- 169 more added
- Sold out
- 36
- 181 more reduced
9 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Ati Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Deutsche Bank AG | 111,126 | $12.8M | 0.00% | −3,051−2.7% | Reduced |
| Schonfeld Strategic Advisors LLC | 107,131 | $12.3M | 0.06% | +107,131 | New |
| Channing Capital Management, LLC | 105,319 | $12.1M | 0.31% | −1,003,841−90.5% | Reduced |
| FACT Capital, LP | 103,102 | $11.8M | 6.62% | +1,702+1.7% | Added |
| Citadel Advisors LLC | 102,702 | $11.8M | 0.01% | −10,201−9.0% | Reduced |
| LTS One Management LP | 102,500 | $11.8M | 4.54% | −107,500−51.2% | Reduced |
| Walleye Capital LLC | 102,298 | $11.7M | 0.07% | +101,761+18,949.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 100,869 | $11.6M | 0.03% | −15,440−13.3% | Reduced |
| State Board of Administration of Florida Retirement System | 100,200 | $11.5M | 0.02% | +5,605+5.9% | Added |
| Stifel Financial Corp | 97,630 | $11.2M | 0.01% | +8,174+9.1% | Added |
| Advisors Asset Management, Inc. | 97,321 | $11.2M | 0.19% | +5,462+5.9% | Added |
| Citigroup Inc | 93,933 | $10.8M | 0.01% | +2,329+2.5% | Added |
| Manufacturers Life Insurance Company, The | 93,735 | $10.8M | 0.01% | −5,443−5.5% | Reduced |
| Worldquant Millennium Advisors LLC | 92,167 | $10.6M | 0.04% | +92,167 | New |
| Hudson Bay Capital Management LP | 91,896 | $10.5M | 0.06% | −62,888−40.6% | Reduced |
| HSBC Holdings PLC | 90,781 | $10.5M | 0.01% | +63,518+233.0% | Added |
| Epoch Investment Partners, Inc. | 90,299 | $10.4M | 0.06% | +51,419+132.3% | Added |
| Guggenheim Capital LLC | 86,405 | $9.92M | 0.07% | −3,343−3.7% | Reduced |
| Susquehanna Fundamental Investments, LLC | 82,786 | $9.50M | 0.32% | +10,075+13.9% | Added |
| First Trust Advisors LP | 81,264 | $9.33M | 0.01% | −2,763−3.3% | Reduced |
| S Squared Technology, LLC | 80,000 | $9.18M | 3.56% | +80,000 | New |
| Great West Life Assurance Co | 79,476 | $9.12M | 0.02% | −26,078−24.7% | Reduced |
| NEOS Investment Management LLC | 78,117 | $8.96M | 0.05% | +2,101+2.8% | Added |
| Tema ETFs LLC | 78,117 | $8.96M | 0.70% | +2,101+2.8% | Added |
| Royal Bank of Canada | 76,236 | $8.75M | 0.00% | −1,208,450−94.1% | Reduced |
| Mengis Capital Management, Inc. | 73,267 | $8.41M | 1.49% | −8,540−10.4% | Reduced |
| Comerica Bank | 72,427 | $8.31M | 0.03% | +17,210+31.2% | Added |
| Globeflex Capital L P | 72,081 | $8.27M | 1.27% | 00.0% | Unchanged |
| SummitTX Capital, L.P. | 68,660 | $7.88M | 0.24% | +68,660 | New |
| SG Americas Securities, LLC | 68,417 | $7.85M | 0.01% | +62,529+1,062.0% | Added |
| LPL Financial LLC | 66,626 | $7.65M | 0.00% | −10,148−13.2% | Reduced |
| MetLife Investment Management | 66,369 | $7.62M | 0.04% | −4,507−6.4% | Reduced |
| Ieq Capital, LLC | 65,217 | $7.48M | 0.02% | +65,217 | New |
| New York State Common Retirement Fund | 64,937 | $7.45M | 0.01% | −224,579−77.6% | Reduced |
| HRT Financial LP | 64,091 | $7.36M | 0.02% | +54,760+586.9% | Added |
| State of Tennessee, Treasury Department | 60,515 | $7.28M | 0.02% | −2,592−4.1% | Reduced |
| Candelo Capital Management LP | 63,396 | $7.28M | 6.64% | +2,500+4.1% | Added |
| Capital Group Private Client Services, Inc. | 63,367 | $7.27M | 0.12% | −13,483−17.5% | Reduced |
| Envestnet Asset Management Inc | 63,317 | $7.27M | 0.00% | +7,765+14.0% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 63,028 | $7.23M | 0.04% | −5,217−7.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 62,692 | $7.20M | 0.05% | −8,525−12.0% | Reduced |
| Capital Fund Management S.A. | 62,675 | $7.19M | 0.07% | +52,099+492.6% | Added |
| Amalgamated Bank | 61,354 | $7.04M | 0.05% | −1,666−2.6% | Reduced |
| Janus Henderson Group PLC | 60,508 | $6.95M | 0.00% | +154+0.3% | Added |
| Warren Averett Asset Management, LLC | 59,843 | $6.87M | 0.06% | +709+1.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 57,359 | $6.58M | 0.05% | −4,411−7.1% | Reduced |
| Tribune Investment Group LP | 57,000 | $6.54M | 3.98% | +57,000 | New |
| Mutual of America Capital Management LLC | 56,543 | $6.49M | 0.07% | −7,112−11.2% | Reduced |
| Treasurer of the State of North Carolina | 56,443 | $6.48M | 0.02% | −6,436−10.2% | Reduced |
| Horizon Investments, LLC | 55,514 | $6.37M | 0.08% | +55,514 | New |
| Mariner, LLC | 54,091 | $6.21M | 0.01% | +47,549+726.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 53,462 | $6.14M | 0.01% | +16,900+46.2% | Added |
| Nordea Investment Management AB | 52,700 | $6.11M | 0.01% | +52,700 | New |
| Sagefield Capital LP | 51,455 | $5.90M | 0.50% | −18,102−26.0% | Reduced |
| Covea Finance | 49,400 | $5.67M | 0.19% | −5,900−10.7% | Reduced |
| TD Asset Management Inc | 47,781 | $5.48M | 0.00% | +31,244+188.9% | Added |
| Thrivent Financial for Lutherans | 47,287 | $5.43M | 0.01% | +1,165+2.5% | Added |
| State of New Jersey Common Pension Fund D | 46,864 | $5.38M | 0.02% | −2,598−5.3% | Reduced |
| The PNC Financial Services Group, Inc. | 45,851 | $5.26M | 0.00% | −164−0.4% | Reduced |
| Yousif Capital Management, LLC | 42,516 | $5.24M | 0.06% | −1,319−3.0% | Reduced |
| Pathstone Holdings, LLC | 45,351 | $5.20M | 0.02% | −2,733−5.7% | Reduced |
| Blair William & Co | 44,102 | $5.06M | 0.01% | +40,415+1,096.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 43,912 | $5.04M | 0.01% | −21,949−33.3% | Reduced |
| Asset Management One Co.,Ltd. | 42,400 | $4.94M | 0.01% | −2,784−6.2% | Reduced |
| 1492 Capital Management LLC | 42,292 | $4.85M | 1.86% | +1,982+4.9% | Added |
| Farmers & Merchants Investments Inc | 42,111 | $4.83M | 0.13% | −2,196−5.0% | Reduced |
| Voya Investment Management LLC | 41,574 | $4.77M | 0.00% | +1,991+5.0% | Added |
| Public Employees Retirement System of Ohio | 41,383 | $4.75M | 0.01% | −3,169−7.1% | Reduced |
| Pier 88 Investment Partners LLC | 40,912 | $4.70M | 1.05% | +33,910+484.3% | Added |
| Credit Agricole S A | 39,022 | $4.48M | 0.01% | +13,963+55.7% | Added |
| Janney Montgomery Scott LLC | 39,014 | $4.48M | 0.01% | +11,134+39.9% | Added |
| Arizona State Retirement System | 38,416 | $4.41M | 0.02% | −3,327−8.0% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 37,778 | $4.34M | 0.02% | −1,904−4.8% | Reduced |
| Quantbot Technologies LP | 37,674 | $4.32M | 0.14% | +31,375+498.1% | Added |
| Louisiana State Employees Retirement System | 37,600 | $4.31M | 0.07% | −800−2.1% | Reduced |
| Engineers Gate Manager LP | 37,426 | $4.30M | 0.05% | +26,781+251.6% | Added |
| Register Financial Advisors LLC | 37,353 | $4.29M | 1.67% | 00.0% | Unchanged |
| Roubaix Capital, LLC | 37,284 | $4.28M | 1.82% | −9,259−19.9% | Reduced |
| Buckingham Strategic Partners | 36,196 | $4.15M | 0.05% | +36,196 | New |
| Cookson Peirce & Co Inc | 35,473 | $4.07M | 0.17% | −1,499−4.1% | Reduced |
| New Age Alpha Advisors, LLC | 34,050 | $3.91M | 0.17% | −2,600−7.1% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 33,999 | $3.90M | 0.02% | −1,375−3.9% | Reduced |
| Cerity Partners LLC | 33,983 | $3.90M | 0.01% | +27,911+459.7% | Added |
| Boothbay Fund Management, LLC | 33,729 | $3.87M | 0.10% | +33,729 | New |
| Rafferty Asset Management, LLC | 33,517 | $3.85M | 0.01% | −2,297−6.4% | Reduced |
| Keystone Investors Pte Ltd | 33,415 | $3.83M | 0.34% | −227,865−87.2% | Reduced |
| Rational Advisors LLC | 33,400 | $3.83M | 0.39% | +33,400 | New |
| Quantinno Capital Management LP | 32,963 | $3.78M | 0.01% | +7,784+30.9% | Added |
| Creative Planning | 32,464 | $3.73M | 0.00% | +11,880+57.7% | Added |
| State of Michigan Retirement System | 32,100 | $3.68M | 0.02% | −700−2.1% | Reduced |
| KLP Kapitalforvaltning AS | 30,400 | $3.49M | 0.01% | +1,000+3.4% | Added |
| Northwestern Mutual Investment Management Company, LLC | 30,398 | $3.49M | 0.04% | −324−1.1% | Reduced |
| Russell Investments Group, Ltd. | 30,019 | $3.45M | 0.00% | +10,144+51.0% | Added |
| Jones Road Capital Management, L.P. | 30,000 | $3.44M | 3.73% | −52,700−63.7% | Reduced |
| Amundi | 29,850 | $3.43M | 0.00% | −177,662−85.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 29,701 | $3.41M | 0.01% | −2,421−7.5% | Reduced |
| Pier Capital, LLC | 29,052 | $3.33M | 0.53% | +29,052 | New |
| New Mexico Educational Retirement Board | 28,800 | $3.31M | 0.10% | 00.0% | Unchanged |
| Expect Equity LLC | 28,410 | $3.26M | 2.69% | +13,060+85.1% | Added |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 28,400 | $3.26M | 0.72% | −14,000−33.0% | Reduced |