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 |
|---|---|---|---|---|---|
| Capital International Investors | 17,095,803 | $1.96B | 0.31% | −51,756−0.3% | Reduced |
| BlackRock, Inc. | 14,666,770 | $1.68B | 0.03% | −190,685−1.3% | Reduced |
| Vanguard Group Inc | 12,726,524 | $1.46B | 0.02% | −327,723−2.5% | Reduced |
| Capital World Investors | 7,355,793 | $844.2M | 0.11% | −544,779−6.9% | Reduced |
| State Street Corp | 5,599,233 | $642.6M | 0.02% | −443,011−7.3% | Reduced |
| FMR LLC | 5,074,824 | $582.4M | 0.03% | +175,654+3.6% | Added |
| Capital Research Global Investors | 3,611,724 | $414.5M | 0.08% | +386,754+12.0% | Added |
| Invesco Ltd. | 3,384,924 | $388.5M | 0.04% | +233,010+7.4% | Added |
| Geode Capital Management, LLC | 2,419,168 | $277.7M | 0.02% | −25,505−1.0% | Reduced |
| Dimensional Fund Advisors LP | 2,125,976 | $244.0M | 0.05% | −16,024−0.7% | Reduced |
| Dendur Capital LP | 2,039,291 | $234.0M | 24.34% | −649,869−24.2% | Reduced |
| D. E. Shaw & Co., Inc. | 2,022,621 | $232.1M | 0.18% | −1,004,481−33.2% | Reduced |
| Norges Bank | 1,732,195 | $198.8M | 0.02% | +1,732,195 | New |
| American Century Companies Inc | 1,590,017 | $182.5M | 0.09% | +215,585+15.7% | Added |
| Charles Schwab Investment Management Inc | 1,487,892 | $170.8M | 0.03% | −23,391−1.5% | Reduced |
| Morgan Stanley | 1,283,539 | $147.3M | 0.01% | −130,847−9.3% | Reduced |
| Ameriprise Financial Inc | 1,244,248 | $142.8M | 0.03% | −70,675−5.4% | Reduced |
| Frontier Capital Management Co LLC | 1,227,453 | $140.9M | 1.49% | −327,108−21.0% | Reduced |
| UBS Group AG | 1,193,129 | $136.9M | 0.03% | +702,656+143.3% | Added |
| Bowen Hanes & Co Inc | 1,177,705 | $135.2M | 3.39% | −151,515−11.4% | Reduced |
| Northern Trust Corp | 1,174,117 | $134.7M | 0.02% | −52,630−4.3% | Reduced |
| Holocene Advisors, LP | 1,071,745 | $123.0M | 0.26% | −462,369−30.1% | Reduced |
| AQR Capital Management LLC | 1,019,840 | $117.0M | 0.06% | +889,912+684.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,007,959 | $115.7M | 0.17% | +21,367+2.2% | Added |
| Loomis Sayles & Co L P | 935,673 | $107.4M | 0.13% | −73,776−7.3% | Reduced |
| Bank of New York Mellon Corp | 912,874 | $104.8M | 0.02% | −5,048−0.5% | Reduced |
| Fisher Asset Management, LLC | 908,495 | $104.3M | 0.04% | −49,153−5.1% | Reduced |
| Barrow Hanley Mewhinney & Strauss LLC | 857,900 | $98.5M | 0.33% | −64,830−7.0% | Reduced |
| Neuberger Berman Group LLC | 822,714 | $94.4M | 0.07% | −125,698−13.3% | Reduced |
| Raymond James Financial Inc | 803,317 | $92.3M | 0.03% | −69,067−7.9% | Reduced |
| Bank of America Corp | 799,074 | $91.7M | 0.01% | +65,466+8.9% | Added |
| Prudential Financial Inc | 796,436 | $91.4M | 0.11% | +567,124+247.3% | Added |
| Point72 Asset Management, L.P. | 760,177 | $87.2M | 0.14% | +450,983+145.9% | Added |
| Jain Global LLC | 665,276 | $76.3M | 0.75% | +643,937+3,017.7% | Added |
| Marshall Wace, LLP | 628,285 | $72.1M | 0.07% | +114,346+22.2% | Added |
| Allspring Global Investments Holdings, LLC | 603,707 | $72.0M | 0.12% | −29,572−4.7% | Reduced |
| Nuveen, LLC | 547,541 | $62.8M | 0.02% | +128,134+30.6% | Added |
| Federated Hermes, Inc. | 545,854 | $62.6M | 0.10% | +54,005+11.0% | Added |
| Millennium Management LLC | 506,881 | $58.2M | 0.04% | +169,290+50.1% | Added |
| Price T Rowe Associates Inc | 498,177 | $57.2M | 0.01% | −575,972−53.6% | Reduced |
| Woodline Partners LP | 471,195 | $54.1M | 0.21% | −275,932−36.9% | Reduced |
| Schroder Investment Management Group | 453,545 | $52.7M | 0.04% | −6,403−1.4% | Reduced |
| Qube Research & Technologies Ltd | 430,227 | $49.4M | 0.07% | +430,227 | New |
| BNP Paribas Arbitrage, SA | 392,682 | $45.1M | 0.03% | −107,319−21.5% | Reduced |
| Balyasny Asset Management LLC | 389,986 | $44.8M | 0.08% | +389,986 | New |
| Gamco Investors, Inc. Et Al | 383,100 | $44.0M | 0.42% | −12,700−3.2% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 377,550 | $43.3M | 0.42% | +377,550 | New |
| Wellington Management Group LLP | 377,358 | $43.3M | 0.01% | −79,942−17.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 363,271 | $41.7M | 0.02% | +363,271 | New |
| Goldman Sachs Group Inc | 362,387 | $41.6M | 0.01% | −13,854−3.7% | Reduced |
| JPMorgan Chase & Co | 354,881 | $40.7M | 0.00% | +21,690+6.5% | Added |
| Tran Capital Management, L.P. | 352,322 | $40.4M | 4.84% | +62,908+21.7% | Added |
| UBS Asset Management Americas Inc | 352,316 | $40.4M | 0.01% | −8,643−2.4% | Reduced |
| Rhumbline Advisers | 347,548 | $39.9M | 0.03% | −14,670−4.1% | Reduced |
| Capital International Inc | 326,054 | $37.4M | 0.29% | −88,000−21.3% | Reduced |
| Senator Investment Group LP | 325,000 | $37.3M | 1.50% | 00.0% | Unchanged |
| KLCM Advisors, Inc. | 322,664 | $37.0M | 3.18% | −31,173−8.8% | Reduced |
| Segall Bryant & Hamill, LLC | 321,693 | $36.9M | 0.50% | −60,039−15.7% | Reduced |
| Retirement Systems of Alabama | 308,783 | $35.4M | 0.12% | −3,590−1.1% | Reduced |
| Emerald Advisers, LLC | 307,552 | $35.3M | 1.09% | −5,536−1.8% | Reduced |
| Alliancebernstein L.P. | 306,517 | $35.2M | 0.01% | +34,749+12.8% | Added |
| 1832 Asset Management L.P. | 294,473 | $33.8M | 0.04% | +294,473 | New |
| Principal Financial Group Inc | 292,144 | $33.5M | 0.02% | −13,999−4.6% | Reduced |
| Gotham Asset Management, LLC | 290,996 | $33.4M | 0.12% | +93,461+47.3% | Added |
| Jane Street Group, LLC | 277,198 | $31.8M | 0.04% | +187,191+208.0% | Added |
| MUFG Securities EMEA plc | 277,000 | $31.8M | 0.37% | +277,000 | New |
| Swiss National Bank | 271,700 | $31.2M | 0.02% | −1,700−0.6% | Reduced |
| Lord, Abbett & Co. LLC | 267,049 | $30.6M | 0.09% | +267,049 | New |
| Natixis | 264,067 | $30.3M | 0.12% | +264,067 | New |
| Cartenna Capital, LP | 260,000 | $29.8M | 1.57% | +260,000 | New |
| California Public Employees Retirement System | 254,689 | $29.2M | 0.02% | −2,986−1.2% | Reduced |
| Canada Pension Plan Investment Board | 245,526 | $28.2M | 0.02% | +8,900+3.8% | Added |
| Allianz Asset Management GmbH | 242,511 | $27.8M | 0.03% | +133,047+121.5% | Added |
| Bank of Nova Scotia | 242,200 | $27.8M | 0.04% | −22,853−8.6% | Reduced |
| Nomura Asset Management International Inc. | 239,609 | $27.5M | 0.04% | +239,609 | New |
| State of Wisconsin Investment Board | 228,775 | $26.3M | 0.06% | −33,636−12.8% | Reduced |
| Legal & General Group Plc | 224,789 | $25.8M | 0.01% | −15,138−6.3% | Reduced |
| Wells Fargo & Company | 217,753 | $25.0M | 0.00% | −2,354−1.1% | Reduced |
| Driehaus Capital Management LLC | 213,111 | $24.5M | 0.17% | +213,111 | New |
| Hawk Ridge Capital Management LP | 209,500 | $24.0M | 1.11% | −65,100−23.7% | Reduced |
| ING Groep NV | 195,300 | $22.4M | 0.14% | −98,213−33.5% | Reduced |
| Emerald Mutual Fund Advisers Trust | 183,555 | $21.1M | 1.03% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 176,486 | $20.5M | 0.03% | −175,622−49.9% | Reduced |
| CIBC World Markets Corp | 177,444 | $20.4M | 0.10% | +177,444 | New |
| Voloridge Investment Management, LLC | 175,732 | $20.2M | 0.07% | −404,735−69.7% | Reduced |
| Concentric Capital Strategies, LP | 161,956 | $18.6M | 0.96% | +161,956 | New |
| Natixis Advisors, L.P. | 151,265 | $17.4M | 0.02% | +75,342+99.2% | Added |
| New York State Teachers Retirement System | 147,969 | $17.0M | 0.03% | −2,032−1.4% | Reduced |
| Signature Estate & Investment Advisors LLC | 144,329 | $16.6M | 0.33% | +618+0.4% | Added |
| Barclays PLC | 139,544 | $16.0M | 0.01% | −180,147−56.4% | Reduced |
| Sanctuary Advisors, LLC | 135,265 | $15.5M | 0.08% | +53,629+65.7% | Added |
| Man Group plc | 131,661 | $15.1M | 0.03% | +103,140+361.6% | Added |
| Royce & Associates LP | 131,532 | $15.1M | 0.15% | −5,930−4.3% | Reduced |
| California State Teachers Retirement System | 130,422 | $15.0M | 0.01% | −3,672−2.7% | Reduced |
| Mountaineer Partners Management, LLC | 128,909 | $14.8M | 8.28% | −15,111−10.5% | Reduced |
| Algert Global LLC | 127,945 | $14.7M | 0.23% | +20,045+18.6% | Added |
| Jupiter Asset Management Ltd | 125,139 | $14.4M | 0.11% | −12,749−9.2% | Reduced |
| SEI Investments Co | 119,585 | $13.7M | 0.01% | +2,088+1.8% | Added |
| Weiss Asset Management LP | 119,031 | $13.7M | 0.19% | +108,790+1,062.3% | Added |
| J. Goldman & Co LP | 114,246 | $13.1M | 0.51% | −33,215−22.5% | Reduced |