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 |
|---|---|---|---|---|---|
| Oppenheimer Asset Management Inc. | 10,924 | $1.25M | 0.02% | −882−7.5% | Reduced |
| Winton Group Ltd | 11,100 | $1.27M | 0.04% | −86,399−88.6% | Reduced |
| CWM Advisors, LLC | 11,562 | $1.33M | 0.12% | +11,562 | New |
| Farmers & Merchants Trust Co of Long Beach | 11,831 | $1.36M | 0.31% | 00.0% | Unchanged |
| Nilsine Partners, LLC | 11,932 | $1.37M | 0.12% | +11,932 | New |
| Nisa Investment Advisors, LLC | 12,102 | $1.39M | 0.00% | −822−6.4% | Reduced |
| Old West Investment Management, LLC | 12,555 | $1.44M | 0.26% | +12,555 | New |
| Fruth Investment Management | 12,750 | $1.46M | 0.39% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 13,019 | $1.49M | 0.01% | 00.0% | Unchanged |
| Arete Wealth Advisors, LLC | 13,236 | $1.52M | 0.11% | +13,236 | New |
| Xponance, Inc. | 13,420 | $1.54M | 0.01% | −1,912−12.5% | Reduced |
| State of Alaska, Department of Revenue | 13,496 | $1.55M | 0.02% | −1,320−8.9% | Reduced |
| Havemeyer Place LP | 13,632 | $1.56M | 0.31% | +13,632 | New |
| Commonwealth Equity Services, LLC | 13,670 | $1.57M | 0.00% | −1,839−11.9% | Reduced |
| Gabelli Funds LLC | 13,696 | $1.57M | 0.01% | −804−5.5% | Reduced |
| H Squared Management LP | 13,800 | $1.58M | 1.36% | +13,800 | New |
| FourThought Financial Partners, LLC | 13,827 | $1.59M | 0.13% | −555−3.9% | Reduced |
| Empowered Funds, LLC | 13,834 | $1.59M | 0.03% | +13,834 | New |
| Thoroughbred Financial Services, LLC | 13,953 | $1.60M | 0.09% | +2,040+17.1% | Added |
| Cambridge Investment Research Advisors, Inc. | 14,275 | $1.64M | 0.00% | +428+3.1% | Added |
| Trexquant Investment LP | 14,551 | $1.67M | 0.01% | +14,551 | New |
| Knights of Columbus Asset Advisors LLC | 14,796 | $1.70M | 0.10% | −211−1.4% | Reduced |
| Dayah Capital LLC | 15,000 | $1.72M | 1.16% | +15,000 | New |
| Cetera Investment Advisers | 15,183 | $1.74M | 0.00% | +8,413+124.3% | Added |
| Ensign Peak Advisors, Inc | 15,565 | $1.79M | 0.00% | −10,576−40.5% | Reduced |
| Jones Financial Companies LLLP | 15,619 | $1.79M | 0.00% | +1,579+11.2% | Added |
| Quadrant Capital Group LLC | 15,773 | $1.81M | 0.05% | +289+1.9% | Added |
| PEAK6 LLC | 15,843 | $1.82M | 0.05% | +15,843 | New |
| Dockside LLC | 15,844 | $1.82M | 0.47% | +15,844 | New |
| NVWM, LLC | 15,885 | $1.82M | 0.40% | −398−2.4% | Reduced |
| Bragg Financial Advisors, Inc | 15,985 | $1.83M | 0.06% | +611+4.0% | Added |
| Wiley Bros.-Aintree Capital, LLC | 16,107 | $1.85M | 0.01% | +6,368+65.4% | Added |
| RMB Capital Management, LLC | 16,107 | $1.85M | 0.03% | +4,267+36.0% | Added |
| Pacer Advisors, Inc. | 16,147 | $1.85M | 0.00% | −2,008−11.1% | Reduced |
| JustInvest LLC | 16,166 | $1.86M | 0.02% | +2,700+20.1% | Added |
| Raiffeisen Bank International AG | 16,000 | $1.86M | 0.02% | 00.0% | Unchanged |
| Atria Investments LLC | 16,887 | $1.94M | 0.02% | +714+4.4% | Added |
| Advisory Services Network, LLC | 16,941 | $1.94M | 0.03% | −798−4.5% | Reduced |
| ExodusPoint Capital Management, LP | 17,634 | $2.02M | 0.02% | +17,634 | New |
| Toronto Dominion Bank | 17,780 | $2.04M | 0.00% | +17,780 | New |
| Paradigm Capital Management Inc | 18,000 | $2.07M | 0.09% | 00.0% | Unchanged |
| Toroso Investments, LLC | 19,027 | $2.18M | 0.01% | +11,526+153.7% | Added |
| Mackenzie Financial Corp | 18,849 | $2.19M | 0.00% | +9,090+93.1% | Added |
| Nomura Holdings Inc | 19,327 | $2.22M | 0.01% | +4,875+33.7% | Added |
| Freemont Management S.A. | 19,900 | $2.28M | 0.45% | +13,200+197.0% | Added |
| Kovitz Investment Group Partners, LLC | 19,952 | $2.29M | 0.05% | −9,027−31.2% | Reduced |
| Marathon Partners Equity Management, LLC | 20,000 | $2.30M | 2.28% | −7,500−27.3% | Reduced |
| Hantz Financial Services, Inc. | 20,041 | $2.30M | 0.03% | +1,054+5.6% | Added |
| Teacher Retirement System of Texas | 20,214 | $2.32M | 0.01% | −12,835−38.8% | Reduced |
| OP Asset Management Ltd | 20,399 | $2.34M | 0.03% | −3,167−13.4% | Reduced |
| Victory Capital Management Inc | 20,429 | $2.34M | 0.00% | −288−1.4% | Reduced |
| Pictet Asset Management Holding SA | 20,752 | $2.38M | 0.00% | +519+2.6% | Added |
| Advisor Group Holdings, Inc. | 20,907 | $2.40M | 0.00% | +309+1.5% | Added |
| Huntington National Bank | 23,145 | $2.66M | 0.02% | −297−1.3% | Reduced |
| Jefferies Financial Group Inc. | 23,353 | $2.68M | 0.02% | −35,987−60.6% | Reduced |
| Ameritas Investment Partners, Inc. | 25,130 | $2.88M | 0.09% | −937−3.6% | Reduced |
| Los Angeles Capital Management LLC | 28,536 | $2.89M | 0.01% | −2,079−6.8% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 25,214 | $2.89M | 0.10% | +10,004+65.8% | Added |
| Panagora Asset Management Inc | 25,436 | $2.92M | 0.01% | +19,458+325.5% | Added |
| Mercer Global Advisors Inc | 25,726 | $2.95M | 0.00% | +11,933+86.5% | Added |
| Assenagon Asset Management S.A. | 25,818 | $2.96M | 0.00% | −41,815−61.8% | Reduced |
| Bank of Montreal | 26,087 | $2.99M | 0.00% | −1,166−4.3% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 26,133 | $3.00M | 0.05% | 00.0% | Unchanged |
| Erste Asset Management GmbH | 25,780 | $3.01M | 0.03% | +18,600+259.1% | Added |
| Wealth Enhancement Advisory Services, LLC | 25,648 | $3.10M | 0.00% | +8,939+53.5% | Added |
| Oregon Public Employees Retirement Fund | 27,093 | $3.11M | 0.04% | −670−2.4% | Reduced |
| CWM, LLC | 27,312 | $3.13M | 0.01% | +25,430+1,351.2% | Added |
| Northwestern Mutual Wealth Management Co | 27,536 | $3.16M | 0.00% | +4,262+18.3% | Added |
| HighTower Advisors, LLC | 27,722 | $3.18M | 0.00% | +1,154+4.3% | Added |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 28,400 | $3.26M | 0.72% | −14,000−33.0% | Reduced |
| Graphene Investments SAS | 28,400 | $3.26M | 2.04% | −12,000−29.7% | Reduced |
| Expect Equity LLC | 28,410 | $3.26M | 2.69% | +13,060+85.1% | Added |
| New Mexico Educational Retirement Board | 28,800 | $3.31M | 0.10% | 00.0% | Unchanged |
| Pier Capital, LLC | 29,052 | $3.33M | 0.53% | +29,052 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 29,701 | $3.41M | 0.01% | −2,421−7.5% | Reduced |
| Amundi | 29,850 | $3.43M | 0.00% | −177,662−85.6% | Reduced |
| Jones Road Capital Management, L.P. | 30,000 | $3.44M | 3.73% | −52,700−63.7% | Reduced |
| Russell Investments Group, Ltd. | 30,019 | $3.45M | 0.00% | +10,144+51.0% | Added |
| Northwestern Mutual Investment Management Company, LLC | 30,398 | $3.49M | 0.04% | −324−1.1% | Reduced |
| KLP Kapitalforvaltning AS | 30,400 | $3.49M | 0.01% | +1,000+3.4% | Added |
| State of Michigan Retirement System | 32,100 | $3.68M | 0.02% | −700−2.1% | Reduced |
| Creative Planning | 32,464 | $3.73M | 0.00% | +11,880+57.7% | Added |
| Quantinno Capital Management LP | 32,963 | $3.78M | 0.01% | +7,784+30.9% | Added |
| Rational Advisors LLC | 33,400 | $3.83M | 0.39% | +33,400 | New |
| Keystone Investors Pte Ltd | 33,415 | $3.83M | 0.34% | −227,865−87.2% | Reduced |
| Rafferty Asset Management, LLC | 33,517 | $3.85M | 0.01% | −2,297−6.4% | Reduced |
| Boothbay Fund Management, LLC | 33,729 | $3.87M | 0.10% | +33,729 | New |
| Cerity Partners LLC | 33,983 | $3.90M | 0.01% | +27,911+459.7% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 33,999 | $3.90M | 0.02% | −1,375−3.9% | Reduced |
| New Age Alpha Advisors, LLC | 34,050 | $3.91M | 0.17% | −2,600−7.1% | Reduced |
| Cookson Peirce & Co Inc | 35,473 | $4.07M | 0.17% | −1,499−4.1% | Reduced |
| Buckingham Strategic Partners | 36,196 | $4.15M | 0.05% | +36,196 | New |
| Roubaix Capital, LLC | 37,284 | $4.28M | 1.82% | −9,259−19.9% | Reduced |
| Register Financial Advisors LLC | 37,353 | $4.29M | 1.67% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 37,426 | $4.30M | 0.05% | +26,781+251.6% | Added |
| Louisiana State Employees Retirement System | 37,600 | $4.31M | 0.07% | −800−2.1% | Reduced |
| Quantbot Technologies LP | 37,674 | $4.32M | 0.14% | +31,375+498.1% | Added |
| Envestnet Portfolio Solutions, Inc. | 37,778 | $4.34M | 0.02% | −1,904−4.8% | Reduced |
| Arizona State Retirement System | 38,416 | $4.41M | 0.02% | −3,327−8.0% | Reduced |
| Janney Montgomery Scott LLC | 39,014 | $4.48M | 0.01% | +11,134+39.9% | Added |