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 |
|---|---|---|---|---|---|
| Cartenna Capital, LP | 260,000 | $29.8M | 1.57% | +260,000 | New |
| Natixis | 264,067 | $30.3M | 0.12% | +264,067 | New |
| Lord, Abbett & Co. LLC | 267,049 | $30.6M | 0.09% | +267,049 | New |
| Swiss National Bank | 271,700 | $31.2M | 0.02% | −1,700−0.6% | Reduced |
| MUFG Securities EMEA plc | 277,000 | $31.8M | 0.37% | +277,000 | New |
| Jane Street Group, LLC | 277,198 | $31.8M | 0.04% | +187,191+208.0% | Added |
| Gotham Asset Management, LLC | 290,996 | $33.4M | 0.12% | +93,461+47.3% | Added |
| Principal Financial Group Inc | 292,144 | $33.5M | 0.02% | −13,999−4.6% | Reduced |
| 1832 Asset Management L.P. | 294,473 | $33.8M | 0.04% | +294,473 | New |
| Alliancebernstein L.P. | 306,517 | $35.2M | 0.01% | +34,749+12.8% | Added |
| Emerald Advisers, LLC | 307,552 | $35.3M | 1.09% | −5,536−1.8% | Reduced |
| Retirement Systems of Alabama | 308,783 | $35.4M | 0.12% | −3,590−1.1% | Reduced |
| Segall Bryant & Hamill, LLC | 321,693 | $36.9M | 0.50% | −60,039−15.7% | Reduced |
| KLCM Advisors, Inc. | 322,664 | $37.0M | 3.18% | −31,173−8.8% | Reduced |
| Senator Investment Group LP | 325,000 | $37.3M | 1.50% | 00.0% | Unchanged |
| Capital International Inc | 326,054 | $37.4M | 0.29% | −88,000−21.3% | Reduced |
| Rhumbline Advisers | 347,548 | $39.9M | 0.03% | −14,670−4.1% | Reduced |
| UBS Asset Management Americas Inc | 352,316 | $40.4M | 0.01% | −8,643−2.4% | Reduced |
| Tran Capital Management, L.P. | 352,322 | $40.4M | 4.84% | +62,908+21.7% | Added |
| JPMorgan Chase & Co | 354,881 | $40.7M | 0.00% | +21,690+6.5% | Added |
| Goldman Sachs Group Inc | 362,387 | $41.6M | 0.01% | −13,854−3.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 363,271 | $41.7M | 0.02% | +363,271 | New |
| Wellington Management Group LLP | 377,358 | $43.3M | 0.01% | −79,942−17.5% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 377,550 | $43.3M | 0.42% | +377,550 | New |
| Gamco Investors, Inc. Et Al | 383,100 | $44.0M | 0.42% | −12,700−3.2% | Reduced |
| Balyasny Asset Management LLC | 389,986 | $44.8M | 0.08% | +389,986 | New |
| BNP Paribas Arbitrage, SA | 392,682 | $45.1M | 0.03% | −107,319−21.5% | Reduced |
| Qube Research & Technologies Ltd | 430,227 | $49.4M | 0.07% | +430,227 | New |
| Schroder Investment Management Group | 453,545 | $52.7M | 0.04% | −6,403−1.4% | Reduced |
| Woodline Partners LP | 471,195 | $54.1M | 0.21% | −275,932−36.9% | Reduced |
| Price T Rowe Associates Inc | 498,177 | $57.2M | 0.01% | −575,972−53.6% | Reduced |
| Millennium Management LLC | 506,881 | $58.2M | 0.04% | +169,290+50.1% | Added |
| Federated Hermes, Inc. | 545,854 | $62.6M | 0.10% | +54,005+11.0% | Added |
| Nuveen, LLC | 547,541 | $62.8M | 0.02% | +128,134+30.6% | Added |
| Allspring Global Investments Holdings, LLC | 603,707 | $72.0M | 0.12% | −29,572−4.7% | Reduced |
| Marshall Wace, LLP | 628,285 | $72.1M | 0.07% | +114,346+22.2% | Added |
| Jain Global LLC | 665,276 | $76.3M | 0.75% | +643,937+3,017.7% | Added |
| Point72 Asset Management, L.P. | 760,177 | $87.2M | 0.14% | +450,983+145.9% | Added |
| Prudential Financial Inc | 796,436 | $91.4M | 0.11% | +567,124+247.3% | Added |
| Bank of America Corp | 799,074 | $91.7M | 0.01% | +65,466+8.9% | Added |
| Raymond James Financial Inc | 803,317 | $92.3M | 0.03% | −69,067−7.9% | Reduced |
| Neuberger Berman Group LLC | 822,714 | $94.4M | 0.07% | −125,698−13.3% | Reduced |
| Barrow Hanley Mewhinney & Strauss LLC | 857,900 | $98.5M | 0.33% | −64,830−7.0% | Reduced |
| Fisher Asset Management, LLC | 908,495 | $104.3M | 0.04% | −49,153−5.1% | Reduced |
| Bank of New York Mellon Corp | 912,874 | $104.8M | 0.02% | −5,048−0.5% | Reduced |
| Loomis Sayles & Co L P | 935,673 | $107.4M | 0.13% | −73,776−7.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 1,007,959 | $115.7M | 0.17% | +21,367+2.2% | Added |
| AQR Capital Management LLC | 1,019,840 | $117.0M | 0.06% | +889,912+684.9% | Added |
| Holocene Advisors, LP | 1,071,745 | $123.0M | 0.26% | −462,369−30.1% | Reduced |
| Northern Trust Corp | 1,174,117 | $134.7M | 0.02% | −52,630−4.3% | Reduced |
| Bowen Hanes & Co Inc | 1,177,705 | $135.2M | 3.39% | −151,515−11.4% | Reduced |
| UBS Group AG | 1,193,129 | $136.9M | 0.03% | +702,656+143.3% | Added |
| Frontier Capital Management Co LLC | 1,227,453 | $140.9M | 1.49% | −327,108−21.0% | Reduced |
| Ameriprise Financial Inc | 1,244,248 | $142.8M | 0.03% | −70,675−5.4% | Reduced |
| Morgan Stanley | 1,283,539 | $147.3M | 0.01% | −130,847−9.3% | Reduced |
| Charles Schwab Investment Management Inc | 1,487,892 | $170.8M | 0.03% | −23,391−1.5% | Reduced |
| American Century Companies Inc | 1,590,017 | $182.5M | 0.09% | +215,585+15.7% | Added |
| Norges Bank | 1,732,195 | $198.8M | 0.02% | +1,732,195 | New |
| D. E. Shaw & Co., Inc. | 2,022,621 | $232.1M | 0.18% | −1,004,481−33.2% | Reduced |
| Dendur Capital LP | 2,039,291 | $234.0M | 24.34% | −649,869−24.2% | Reduced |
| Dimensional Fund Advisors LP | 2,125,976 | $244.0M | 0.05% | −16,024−0.7% | Reduced |
| Geode Capital Management, LLC | 2,419,168 | $277.7M | 0.02% | −25,505−1.0% | Reduced |
| Invesco Ltd. | 3,384,924 | $388.5M | 0.04% | +233,010+7.4% | Added |
| Capital Research Global Investors | 3,611,724 | $414.5M | 0.08% | +386,754+12.0% | Added |
| FMR LLC | 5,074,824 | $582.4M | 0.03% | +175,654+3.6% | Added |
| State Street Corp | 5,599,233 | $642.6M | 0.02% | −443,011−7.3% | Reduced |
| Capital World Investors | 7,355,793 | $844.2M | 0.11% | −544,779−6.9% | Reduced |
| Vanguard Group Inc | 12,726,524 | $1.46B | 0.02% | −327,723−2.5% | Reduced |
| BlackRock, Inc. | 14,666,770 | $1.68B | 0.03% | −190,685−1.3% | Reduced |
| Capital International Investors | 17,095,803 | $1.96B | 0.31% | −51,756−0.3% | Reduced |
| Davidson Kempner Capital Management LP | 0 | $0 | 0.00% | −530,000−100.0% | Sold out |
| Rokos Capital Management LLP | 0 | $0 | 0.00% | −527,256−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −259,992−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −236,788−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −211,002−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −181,797−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −136,458−100.0% | Sold out |
| Kinetic Partners Management, LP | 0 | $0 | 0.00% | −132,800−100.0% | Sold out |
| Bayberry Capital Partners LP | 0 | $0 | 0.00% | −124,100−100.0% | Sold out |
| Discovery Capital Management, LLC | 0 | $0 | 0.00% | −105,100−100.0% | Sold out |
| Van Eck Associates Corp | 0 | $0 | 0.00% | −50,925−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −45,664−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −38,328−100.0% | Sold out |
| BI Asset Management Fondsmaeglerselskab A/S | 0 | $0 | 0.00% | −34,944−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −22,509−100.0% | Sold out |
| First Financial Bankshares Inc | 0 | $0 | 0.00% | −19,534−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −16,858−100.0% | Sold out |
| Yaupon Capital Management LP | 0 | $0 | 0.00% | −15,844−100.0% | Sold out |
| Fund 1 Investments, LLC | 0 | $0 | 0.00% | −12,813−100.0% | Sold out |
| Friedenthal Financial | 0 | $0 | 0.00% | −12,204−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −10,241−100.0% | Sold out |
| Oak Thistle LLC | 0 | $0 | 0.00% | −7,325−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −2,689−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −864−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −617−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −472−100.0% | Sold out |
| Ci Investments Inc. | 0 | $0 | 0.00% | −348−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −264−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −217−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −179−100.0% | Sold out |