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, Q2 2026
Institutional positions in Ati Inc as of Jun 30, 2026. 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
- 795
- +124 vs. Q1 2026
- Shares held
- 127.6M
- +300.1K (+0.2%) vs. Q1 2026
- Total value
- $25.1B
- +$6.58B (+35.6%) vs. Q1 2026
- New holders
- 178
- 306 more added
- Sold out
- 54
- 222 more reduced
7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Ati Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voleon Capital Management LP | 154,311 | $30.4M | 0.55% | +55,388+56.0% | Added |
| Tudor Investment Corp Et Al | 148,638 | $29.3M | 0.12% | +59,703+67.1% | Added |
| First Trust Advisors LP | 148,215 | $29.2M | 0.02% | +55,068+59.1% | Added |
| Barclays PLC | 139,775 | $27.5M | 0.01% | +40,447+40.7% | Added |
| HRT Financial LP | 131,009 | $25.8M | 0.05% | −121,889−48.2% | Reduced |
| Epoch Investment Partners, Inc. | 128,556 | $25.3M | 0.14% | +42,955+50.2% | Added |
| Lord, Abbett & Co. LLC | 124,549 | $24.5M | 0.07% | −57,500−31.6% | Reduced |
| New York State Teachers Retirement System | 120,661 | $23.8M | 0.04% | −13,981−10.4% | Reduced |
| Brevan Howard Capital Management LP | 117,553 | $23.2M | 0.33% | +54,843+87.5% | Added |
| Sanctuary Advisors, LLC | 117,432 | $23.1M | 0.11% | +1,816+1.6% | Added |
| Vanguard Asset Management, Ltd | 115,324 | $22.7M | 0.02% | +10,500+10.0% | Added |
| Bridgewater Associates, LP | 114,940 | $22.7M | 0.09% | +92,990+423.6% | Added |
| Algert Global LLC | 112,780 | $22.2M | 0.26% | +5,526+5.2% | Added |
| Advisors Asset Management, Inc. | 111,122 | $21.9M | 0.33% | +8,617+8.4% | Added |
| Aventail Capital Group, LP | 110,892 | $21.9M | 1.25% | −74,420−40.2% | Reduced |
| State Board of Administration of Florida Retirement System | 105,723 | $20.8M | 0.03% | +7,193+7.3% | Added |
| Stifel Financial Corp | 101,140 | $19.9M | 0.02% | +8,521+9.2% | Added |
| FACT Capital, LP | 99,684 | $19.6M | 11.04% | −3,418−3.3% | Reduced |
| Jump Financial, LLC | 99,067 | $19.5M | 0.17% | +95,548+2,715.2% | Added |
| Public Employees Retirement Association of Colorado | 97,219 | $19.2M | 0.07% | +84,200+646.7% | Added |
| Worldquant Millennium Advisors LLC | 96,891 | $19.1M | 0.07% | +38,881+67.0% | Added |
| Oribel Capital Management, LP | 96,500 | $19.0M | 1.58% | +96,500 | New |
| SEI Investments Co | 95,963 | $18.9M | 0.02% | +5,918+6.6% | Added |
| Susquehanna Fundamental Investments, LLC | 95,495 | $18.8M | 0.35% | +12,709+15.4% | Added |
| Guggenheim Capital LLC | 93,029 | $18.3M | 0.12% | −11,332−10.9% | Reduced |
| Natixis Advisors, L.P. | 91,589 | $18.1M | 0.02% | −32,688−26.3% | Reduced |
| Toroso Investments, LLC | 91,436 | $18.0M | 0.04% | −12,230−11.8% | Reduced |
| Empowered Funds, LLC | 91,374 | $18.0M | 0.09% | +35,404+63.3% | Added |
| Keystone Investors Pte Ltd | 90,612 | $17.9M | 0.96% | +90,612 | New |
| Tran Capital Management, L.P. | 89,993 | $17.7M | 2.04% | −869−1.0% | Reduced |
| Royce & Associates LP | 89,102 | $17.6M | 0.14% | −9,010−9.2% | Reduced |
| Engineers Gate Manager LP | 87,049 | $17.2M | 0.22% | +18,104+26.3% | Added |
| TD Asset Management Inc | 85,793 | $16.9M | 0.01% | +40,224+88.3% | Added |
| Mariner, LLC | 84,816 | $16.7M | 0.02% | +12,329+17.0% | Added |
| Signature Estate & Investment Advisors LLC | 83,258 | $16.4M | 0.30% | −16,694−16.7% | Reduced |
| Credit Agricole S A | 83,022 | $16.4M | 0.04% | +17,000+25.7% | Added |
| Pinnbrook Capital Management LP | 82,081 | $16.2M | 2.69% | +75,181+1,089.6% | Added |
| Wellington Management Group LLP | 81,401 | $16.0M | 0.00% | +5,656+7.5% | Added |
| Great West Life Assurance Co | 80,875 | $15.9M | 0.03% | +2,362+3.0% | Added |
| Senator Investment Group LP | 80,000 | $15.8M | 0.58% | −65,000−44.8% | Reduced |
| Nearwater Capital Markets, Ltd | 80,000 | $15.8M | 0.27% | +80,000 | New |
| CI Private Wealth, LLC | 78,728 | $15.5M | 0.02% | +67,120+578.2% | Added |
| Northwestern Mutual Wealth Management Co | 78,629 | $15.5M | 0.01% | −679−0.9% | Reduced |
| Walleye Capital LLC | 77,381 | $15.3M | 0.07% | −68,728−47.0% | Reduced |
| RPg Family Wealth Advisory, LLC | 76,473 | $15.1M | 2.51% | +32,370+73.4% | Added |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 73,339 | $14.5M | 0.19% | +20,507+38.8% | Added |
| ExodusPoint Capital Management, LP | 73,139 | $14.4M | 0.13% | −15,073−17.1% | Reduced |
| Premier Fund Managers Ltd | 71,928 | $14.2M | 1.29% | +71,928 | New |
| Tema ETFs LLC | 72,045 | $14.2M | 0.46% | −9,216−11.3% | Reduced |
| MetLife Investment Management | 71,003 | $14.0M | 0.06% | +4,187+6.3% | Added |
| Agf Management Ltd | 70,510 | $13.9M | 0.05% | +70,510 | New |
| Trexquant Investment LP | 69,839 | $13.8M | 0.09% | +69,839 | New |
| Mengis Capital Management, Inc. | 69,614 | $13.7M | 2.09% | −1,038−1.5% | Reduced |
| New York State Common Retirement Fund | 69,443 | $13.7M | 0.02% | +6,006+9.5% | Added |
| Treasurer of the State of North Carolina | 68,497 | $13.5M | 0.03% | +10,827+18.8% | Added |
| Globeflex Capital L P | 67,186 | $13.2M | 1.69% | −1,975−2.9% | Reduced |
| Ieq Capital, LLC | 66,949 | $13.2M | 0.06% | +15,265+29.5% | Added |
| HSBC Holdings PLC | 65,083 | $12.8M | 0.01% | +36,295+126.1% | Added |
| Amalgamated Bank | 64,761 | $12.8M | 0.09% | +2,225+3.6% | Added |
| Manufacturers Life Insurance Company, The | 64,289 | $12.7M | 0.01% | −5,279−7.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 61,253 | $12.1M | 0.09% | +3,575+6.2% | Added |
| Russell Investments Group, Ltd. | 60,573 | $11.9M | 0.01% | −48,676−44.6% | Reduced |
| Jupiter Topco LLC | 60,508 | $11.9M | 0.00% | +60,508 | New |
| Mountaineer Partners Management, LLC | 60,419 | $11.9M | 8.66% | −31,365−34.2% | Reduced |
| Jones Financial Companies LLLP | 59,709 | $11.8M | 0.00% | +9,996+20.1% | Added |
| Man Group plc | 59,556 | $11.7M | 0.02% | +210.0% | Added |
| SG Capital Management LLC | 58,279 | $11.5M | 1.04% | +58,279 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 57,358 | $11.3M | 0.02% | +5,094+9.7% | Added |
| Channing Capital Management, LLC | 56,763 | $11.2M | 0.26% | −21,235−27.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 56,150 | $11.1M | 0.04% | +56,150 | New |
| State of Tennessee, Treasury Department | 55,897 | $11.0M | 0.03% | −1,006−1.8% | Reduced |
| Aquatic Capital Management LLC | 55,786 | $11.0M | 0.38% | +15,406+38.2% | Added |
| Natixis | 55,037 | $10.8M | 0.05% | +36,735+200.7% | Added |
| Vanguard Global Advisers, LLC | 54,550 | $10.8M | 0.01% | −1,118−2.0% | Reduced |
| Nordea Investment Management AB | 51,200 | $10.2M | 0.01% | +744+1.5% | Added |
| Teachers Retirement System of the State of Kentucky | 51,026 | $10.1M | 0.07% | +780+1.6% | Added |
| Hudson Bay Capital Management LP | 50,919 | $10.0M | 0.05% | +23,522+85.9% | Added |
| Voya Investment Management LLC | 50,893 | $10.0M | 0.01% | +3,642+7.7% | Added |
| Victory Capital Management Inc | 50,750 | $10.0M | 0.01% | +20,511+67.8% | Added |
| Cerity Partners LLC | 50,707 | $9.99M | 0.01% | +9,059+21.8% | Added |
| Mutual of America Capital Management LLC | 50,696 | $9.99M | 0.10% | −1,370−2.6% | Reduced |
| Glenmede Trust Co NA | 48,299 | $9.52M | 0.04% | +48,299 | New |
| Quantinno Capital Management LP | 47,593 | $9.38M | 0.01% | +7,135+17.6% | Added |
| Creative Planning | 47,399 | $9.34M | 0.01% | +7,758+19.6% | Added |
| Franklin Resources Inc | 46,856 | $9.24M | 0.00% | +30,717+190.3% | Added |
| Jennison Associates LLC | 46,197 | $9.11M | 0.01% | +46,197 | New |
| Intech Investment Management LLC | 46,083 | $9.08M | 0.08% | −13,311−22.4% | Reduced |
| Entropy Technologies, LP | 45,851 | $9.04M | 0.36% | +26,825+141.0% | Added |
| Cookson Peirce & Co Inc | 45,845 | $9.04M | 0.30% | +16,896+58.4% | Added |
| Asset Management One Co.,Ltd. | 44,561 | $8.79M | 0.02% | +2,346+5.6% | Added |
| Warren Averett Asset Management, LLC | 44,418 | $8.75M | 0.05% | −1,664−3.6% | Reduced |
| State of New Jersey Common Pension Fund D | 43,715 | $8.62M | 0.03% | −3,149−6.7% | Reduced |
| STRS Ohio | 42,744 | $8.42M | 0.03% | +39,522+1,226.6% | Added |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 41,920 | $8.26M | 1.33% | +18,800+81.3% | Added |
| Capital Group Private Client Services, Inc. | 41,279 | $8.14M | 0.11% | −3,070−6.9% | Reduced |
| 1492 Capital Management LLC | 41,060 | $8.09M | 2.39% | −805−1.9% | Reduced |
| Pathstone Holdings, LLC | 41,031 | $8.09M | 0.02% | −2,115−4.9% | Reduced |
| Public Employees Retirement System of Ohio | 40,142 | $7.91M | 0.02% | +212+0.5% | Added |
| S Squared Technology, LLC | 40,000 | $7.88M | 2.45% | −15,000−27.3% | Reduced |
| Bank of Montreal | 39,943 | $7.87M | 0.00% | +16,106+67.6% | Added |