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 |
|---|---|---|---|---|---|
| Healthcare of Ontario Pension Plan Trust Fund | 178,880 | $35.3M | 0.05% | +91,838+105.5% | Added |
| Yaupon Capital Management LP | 180,204 | $35.5M | 1.18% | +180,204 | New |
| Rokos Capital Management LLP | 180,935 | $35.7M | 0.45% | +100,592+125.2% | Added |
| Prudential Financial Inc | 181,276 | $35.7M | 0.04% | −628,694−77.6% | Reduced |
| Panagora Asset Management Inc | 188,522 | $37.2M | 0.11% | +22,991+13.9% | Added |
| Citigroup Inc | 192,174 | $37.9M | 0.02% | +116,558+154.1% | Added |
| Legal & General Group Plc | 199,420 | $39.3M | 0.01% | −12,578−5.9% | Reduced |
| Jupiter Asset Management Ltd | 202,574 | $39.9M | 0.20% | −139,103−40.7% | Reduced |
| Hawk Ridge Capital Management LP | 204,700 | $40.3M | 1.29% | +19,100+10.3% | Added |
| Driehaus Capital Management LLC | 205,124 | $40.4M | 0.23% | −7,610−3.6% | Reduced |
| LPL Financial LLC | 205,781 | $40.6M | 0.01% | +40,211+24.3% | Added |
| KLCM Advisors, Inc. | 207,475 | $40.9M | 3.28% | −55,364−21.1% | Reduced |
| Schroder Investment Management Group | 207,874 | $41.1M | 0.03% | −194,719−48.4% | Reduced |
| Capital International Inc | 210,648 | $41.5M | 0.29% | −24,280−10.3% | Reduced |
| Blair William & Co | 231,946 | $45.7M | 0.12% | −5,050−2.1% | Reduced |
| Royal Bank of Canada | 240,438 | $47.4M | 0.01% | +69,409+40.6% | Added |
| Segall Bryant & Hamill, LLC | 242,639 | $47.8M | 0.57% | −34,732−12.5% | Reduced |
| California Public Employees Retirement System | 258,900 | $51.0M | 0.03% | +5,103+2.0% | Added |
| Vaughan Nelson Investment Management, L.P. | 269,170 | $53.1M | 0.47% | −113,205−29.6% | Reduced |
| Gotham Asset Management, LLC | 269,572 | $53.1M | 0.12% | +9,084+3.5% | Added |
| Swiss National Bank | 276,400 | $54.5M | 0.03% | +7,600+2.8% | Added |
| Clearbridge Investments, LLC | 280,386 | $55.3M | 0.05% | +280,386 | New |
| Allianz Asset Management GmbH | 282,318 | $55.6M | 0.05% | +14,484+5.4% | Added |
| Retirement Systems of Alabama | 286,874 | $56.5M | 0.17% | −25,413−8.1% | Reduced |
| Principal Financial Group Inc | 308,372 | $60.8M | 0.03% | +5,214+1.7% | Added |
| Canada Pension Plan Investment Board | 321,526 | $63.4M | 0.04% | +153,800+91.7% | Added |
| ING Groep NV | 330,300 | $65.1M | 0.32% | −47,200−12.5% | Reduced |
| Thrivent Financial for Lutherans | 338,645 | $66.7M | 0.11% | +288,246+571.9% | Added |
| Gamco Investors, Inc. Et Al | 358,000 | $70.6M | 0.63% | −3,500−1.0% | Reduced |
| Rhumbline Advisers | 376,589 | $74.2M | 0.06% | +22,218+6.3% | Added |
| Alliancebernstein L.P. | 522,371 | $76.0M | 0.03% | −53,157−9.2% | Reduced |
| Amundi | 388,616 | $76.6M | 0.02% | +127,430+48.8% | Added |
| Envestnet Asset Management Inc | 391,409 | $77.1M | 0.02% | +175,631+81.4% | Added |
| Bank of Nova Scotia | 417,290 | $82.2M | 0.12% | −49,859−10.7% | Reduced |
| Frontier Capital Management Co LLC | 419,968 | $82.8M | 0.77% | −274,454−39.5% | Reduced |
| UBS Asset Management Americas Inc | 428,271 | $84.4M | 0.02% | +73,534+20.7% | Added |
| DSM Capital Partners LLC | 441,048 | $86.9M | 1.49% | +441,048 | New |
| Square Wave Capital, LLC | 444,800 | $87.7M | 13.08% | +78,400+21.4% | Added |
| Neuberger Berman Group LLC | 450,261 | $88.7M | 0.06% | −44,664−9.0% | Reduced |
| 1832 Asset Management L.P. | 459,483 | $90.6M | 0.11% | +307,969+203.3% | Added |
| UBS Group AG | 464,718 | $91.6M | 0.01% | −954,362−67.3% | Reduced |
| JPMorgan Chase & Co | 465,592 | $93.3M | 0.01% | +58,169+14.3% | Added |
| Federated Hermes, Inc. | 474,180 | $93.5M | 0.13% | −71,352−13.1% | Reduced |
| Wells Fargo & Company | 483,681 | $95.3M | 0.02% | +132,539+37.7% | Added |
| Allspring Global Investments Holdings, LLC | 502,038 | $96.5M | 0.15% | −18,208−3.5% | Reduced |
| SG Americas Securities, LLC | 489,505 | $96.5M | 0.06% | −585,863−54.5% | Reduced |
| Citadel Advisors LLC | 497,418 | $98.0M | 0.06% | +194,122+64.0% | Added |
| Holocene Advisors, LP | 497,600 | $98.1M | 0.22% | −599,988−54.7% | Reduced |
| Balyasny Asset Management LLC | 514,088 | $101.3M | 0.19% | −337,576−39.6% | Reduced |
| Loomis Sayles & Co L P | 581,326 | $114.6M | 0.14% | −72,090−11.0% | Reduced |
| Freestone Grove Partners LP | 587,093 | $115.7M | 0.76% | +11,220+1.9% | Added |
| Two Sigma Investments, LP | 636,671 | $125.5M | 0.09% | +618,896+3,481.8% | Added |
| Assenagon Asset Management S.A. | 657,117 | $129.5M | 0.17% | +73,087+12.5% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 658,413 | $129.8M | 0.39% | −124,053−15.9% | Reduced |
| Raymond James Financial Inc | 667,720 | $131.6M | 0.04% | +29,014+4.5% | Added |
| Marshall Wace, LLP | 709,552 | $139.9M | 0.12% | +173,074+32.3% | Added |
| Nuveen, LLC | 737,096 | $145.3M | 0.03% | +158,480+27.4% | Added |
| Goldman Sachs Group Inc | 751,276 | $148.1M | 0.02% | +303,457+67.8% | Added |
| American Century Companies Inc | 765,808 | $150.9M | 0.07% | −303,474−28.4% | Reduced |
| Bowen Hanes & Co Inc | 1,043,105 | $151.7M | 3.69% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 815,585 | $160.8M | 0.10% | −927,024−53.2% | Reduced |
| Polen Capital Management LLC | 819,236 | $161.5M | 1.39% | +819,236 | New |
| Arrowstreet Capital, Limited Partnership | 839,786 | $165.5M | 0.07% | −363,940−30.2% | Reduced |
| Artemis Investment Management LLP | 841,493 | $165.9M | 1.48% | +119,988+16.6% | Added |
| Bank of New York Mellon Corp | 857,414 | $169.0M | 0.03% | −11,770−1.4% | Reduced |
| Ameriprise Financial Inc | 858,201 | $169.2M | 0.03% | −140,633−14.1% | Reduced |
| Fisher Asset Management, LLC | 872,372 | $171.9M | 0.05% | −52,149−5.6% | Reduced |
| Millennium Management LLC | 875,260 | $172.5M | 0.12% | +256,020+41.3% | Added |
| Vanguard Fiduciary Trust Co | 881,293 | $173.7M | 0.04% | +36,916+4.4% | Added |
| BNP Paribas Arbitrage, SA | 922,903 | $181.9M | 0.10% | +270,907+41.6% | Added |
| Bessemer Group Inc | 954,983 | $188.2M | 0.26% | +952,877+45,245.8% | Added |
| Dendur Capital LP | 1,009,000 | $198.9M | 11.64% | −274,103−21.4% | Reduced |
| Price T Rowe Associates Inc | 1,021,799 | $201.4M | 0.02% | +693,067+210.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,120,952 | $220.9M | 0.26% | +88,178+8.5% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 1,153,880 | $227.4M | 0.65% | −2,178,963−65.4% | Reduced |
| Dimensional Fund Advisors LP | 1,160,274 | $228.7M | 0.04% | −206,530−15.1% | Reduced |
| Point72 Asset Management, L.P. | 1,240,348 | $244.5M | 0.37% | −692,231−35.8% | Reduced |
| Northern Trust Corp | 1,288,597 | $254.0M | 0.03% | +49,577+4.0% | Added |
| Jane Street Group, LLC | 1,410,930 | $278.1M | 0.18% | −80,333−5.4% | Reduced |
| AQR Capital Management LLC | 1,432,935 | $282.4M | 0.10% | +210,355+17.2% | Added |
| Charles Schwab Investment Management Inc | 1,483,253 | $292.3M | 0.04% | −18,876−1.3% | Reduced |
| Norges Bank | 1,739,884 | $342.9M | 0.03% | +1,739,884 | New |
| Bank of America Corp | 1,767,047 | $348.3M | 0.02% | +402,106+29.5% | Added |
| Morgan Stanley | 1,865,178 | $367.6M | 0.02% | +196,587+11.8% | Added |
| Qube Research & Technologies Ltd | 2,144,028 | $422.6M | 0.47% | +1,285,210+149.6% | Added |
| Geode Capital Management, LLC | 2,777,512 | $547.6M | 0.03% | −169,813−5.8% | Reduced |
| Invesco Ltd. | 3,449,291 | $679.9M | 0.05% | −406,352−10.5% | Reduced |
| Capital International Investors | 3,719,485 | $733.2M | 0.15% | −2,164,464−36.8% | Reduced |
| FMR LLC | 4,989,171 | $983.4M | 0.04% | −258,004−4.9% | Reduced |
| Capital Research Global Investors | 5,093,768 | $1.00B | 0.14% | −1,066,339−17.3% | Reduced |
| State Street Corp | 5,237,299 | $1.03B | 0.03% | −143,714−2.7% | Reduced |
| Capital World Investors | 5,249,249 | $1.03B | 0.12% | −463,680−8.1% | Reduced |
| Vanguard Capital Management LLC | 6,162,418 | $1.21B | 0.03% | +38,290+0.6% | Added |
| Vanguard Portfolio Management LLC | 6,219,875 | $1.23B | 0.06% | +398,367+6.8% | Added |
| BlackRock, Inc. | 18,708,922 | $3.69B | 0.05% | +2,267,269+13.8% | Added |
| Nomura Asset Management International Inc. | 0 | $0 | 0.00% | −117,121−100.0% | Sold out |
| Emerald Mutual Fund Advisers Trust | 0 | $0 | 0.00% | −93,847−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −89,389−100.0% | Sold out |
| Anomaly Capital Management, LP | 0 | $0 | 0.00% | −74,830−100.0% | Sold out |
| Qsemble Capital Management, LP | 0 | $0 | 0.00% | −42,008−100.0% | Sold out |