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ATI

Ati Inc
$188.36 +2.76 (+1.49%) At close · Jul 9
Market Cap
$25.53B
Shares
136,470,427

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 684
Total Value: $17,939,396,143
Total Shares: 123,063,042
Showing 1–100 of 716 holdings by value · page 1 of 8

Institutional Ownership Trend

26 quarters

Superinvestors Holding ATI

All superinvestors →
Andreas Halvorsen $484,795,342 Mario Gabelli $52,583,790 Joel Greenblatt $37,890,584 George Soros $7,684,942 Ray Dalio $3,192,847

Holder Concentration

Across 673 13F filers
Top Holder
13.4%
Jun 2023 → Mar 2026 · range 11.7% – 15.1%
of institutional value
Top 5
32.8%
Jun 2023 → Mar 2026 · range 32.8% – 45.8%
of institutional value
Top 10
49.7%
Jun 2023 → Mar 2026 · range 49.7% – 60.8%
of institutional value
HHI
365
Jun 2023 → Mar 2026 · range 365 – 568
Broadly held
Showing 100 of 716
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $2,391,602,835 13.33% 16,441,653
Mega Capital Research Global Investors $896,049,164 4.99% 6,160,107
Mega VANGUARD CAPITAL MANAGEMENT LLC $890,815,658 4.97% 6,124,128
Mega Capital International Investors $855,879,221 4.77% 5,883,949
Mega Capital World Investors $831,002,652 4.63% 5,712,929
Mega STATE STREET CORP $782,722,150 4.36% 5,381,013
Mega FMR LLC $763,254,072 4.25% 5,247,175
Mega Invesco Ltd. $560,841,825 3.13% 3,855,643
Large VIKING GLOBAL INVESTORS LP $484,795,342 2.70% 3,332,843
Mega GEODE CAPITAL MANAGEMENT, LLC $428,717,894 2.39% 2,947,325
Large Point72 Asset Management, L.P. $281,112,941 1.57% 1,932,579
Mega D. E. Shaw & Co., Inc. $253,479,904 1.41% 1,742,609
Mega MORGAN STANLEY $242,713,238 1.35% 1,668,591
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $218,499,684 1.22% 1,502,129
Mega JANE STREET GROUP, LLC $216,919,115 1.21% 1,491,263
Mega UBS Group AG $206,419,376 1.15% 1,419,080
Mega DIMENSIONAL FUND ADVISORS LP $198,815,307 1.11% 1,366,804
Mega BANK OF AMERICA CORP /DE/ Bank $198,544,316 1.11% 1,364,941
Mid DENDUR CAPITAL LP $186,640,162 1.04% 1,283,103
Mega NORTHERN TRUST CORP Bank $180,227,847 1.00% 1,239,020
Mega AQR CAPITAL MANAGEMENT LLC $177,836,484 0.99% 1,222,580
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $175,093,983 0.98% 1,203,726
Large Holocene Advisors, LP $159,655,150 0.89% 1,097,588
Large SG Americas Securities, LLC Broker-Dealer $156,423,029 0.87% 1,075,368
Mega AMERICAN CENTURY COMPANIES INC $155,537,759 0.87% 1,069,282
Mid BOWEN HANES & CO INC $151,730,053 0.85% 1,043,105
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $150,227,305 0.84% 1,032,774
Mega AMERIPRISE FINANCIAL INC $145,290,392 0.81% 998,834
Mega Fisher Asset Management, LLC $134,480,824 0.75% 924,521
Large Assenagon Asset Management S.A. $129,517,760 0.72% 657,117
Mega Bank of New York Mellon Corp Bank $126,431,498 0.70% 869,184
Large Qube Research & Technologies Ltd $124,923,666 0.70% 858,818
Large Balyasny Asset Management L.P. $123,883,045 0.69% 851,664
Mega VANGUARD FIDUCIARY TRUST CO Bank $122,823,078 0.68% 844,377
Mega PNC FINANCIAL SERVICES GROUP, INC. $120,984,318 0.67% 831,736
Large PRUDENTIAL FINANCIAL INC $117,818,236 0.66% 809,970
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $113,817,503 0.63% 782,466
Mid Artemis Investment Management LLP $104,950,117 0.59% 721,505
Mid FRONTIER CAPITAL MANAGEMENT CO LLC $101,010,624 0.56% 694,422
Large LOOMIS SAYLES & CO L P $95,045,890 0.53% 653,416
Mega BNP PARIBAS ARBITRAGE, SA $94,839,338 0.53% 651,996
Mega RAYMOND JAMES FINANCIAL INC $92,906,171 0.52% 638,706
Mega MILLENNIUM MANAGEMENT LLC $90,074,650 0.50% 619,240
Mega Nuveen, LLC $84,165,482 0.47% 578,616
Large Freestone Grove Partners LP $83,766,486 0.47% 575,873
Mega ALLIANCEBERNSTEIN L.P. $83,716,302 0.47% 575,528
Large FEDERATED HERMES, INC. $79,353,084 0.44% 545,532
Large MARSHALL WACE, LLP $78,036,089 0.43% 536,478
Large Allspring Global Investments Holdings, LLC $75,674,982 0.42% 520,246
Mega NEUBERGER BERMAN GROUP LLC $71,991,790 0.40% 494,925
Large BANK OF NOVA SCOTIA Bank $67,951,493 0.38% 467,149
Mega GOLDMAN SACHS GROUP INC $65,139,750 0.36% 447,819
Mega JPMORGAN CHASE & CO $59,263,747 0.33% 407,423
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $58,561,176 0.33% 402,593
Mid VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. $55,620,265 0.31% 382,375
Large ING GROEP NV $54,911,150 0.31% 377,500
Small Square Wave Capital, LLC $53,296,544 0.30% 366,400
Mid GAMCO INVESTORS, INC. ET AL $52,583,790 0.29% 361,500
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $51,600,041 0.29% 354,737
Mega RHUMBLINE ADVISERS $51,546,805 0.29% 354,371
Mega WELLS FARGO & COMPANY/MN $51,077,113 0.28% 351,142
Large JUPITER ASSET MANAGEMENT LTD $49,700,336 0.28% 341,677
Mega PRICE T ROWE ASSOCIATES INC /MD/ $47,817,356 0.27% 328,732
Large Retirement Systems of Alabama Pension $45,425,267 0.25% 312,287
Mega CITADEL ADVISORS LLC $44,117,435 0.25% 303,296
Mega PRINCIPAL FINANCIAL GROUP INC $44,097,362 0.25% 303,158
Mid SEGALL BRYANT & HAMILL, LLC $40,346,385 0.22% 277,371
Mega Swiss National Bank Bank $39,099,648 0.22% 268,800
Large Allianz Asset Management GmbH $38,959,132 0.22% 267,834
Large Jain Global LLC $38,470,678 0.21% 264,476
Mid KLCM Advisors, Inc. $38,232,560 0.21% 262,839
Mega Amundi $37,992,115 0.21% 261,186
Large Gotham Asset Management, LLC $37,890,584 0.21% 260,488
Mega California Public Employees Retirement System Pension $36,917,311 0.21% 253,797
Large HRT FINANCIAL LP $36,786,543 0.21% 252,898
Large BLAIR WILLIAM & CO/IL $34,473,438 0.19% 236,996
Large Capital International, Inc./CA/ $34,172,626 0.19% 234,928
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $33,004,874 0.18% 226,900
Mega ENVESTNET ASSET MANAGEMENT INC $31,387,067 0.17% 215,778
Large Driehaus Capital Management LLC $30,944,287 0.17% 212,734
Mega Legal & General Group Plc $30,837,228 0.17% 211,998
Large STATE OF WISCONSIN INVESTMENT BOARD $29,377,537 0.16% 201,963
Mega CITADEL ADVISORS LLC $27,666,492 0.15% 190,200
Mid HAWK RIDGE CAPITAL MANAGEMENT LP $26,997,376 0.15% 185,600
Mid Aventail Capital Group, LP $26,955,483 0.15% 185,312
Large LORD, ABBETT & CO. LLC $26,480,847 0.15% 182,049
Mid EMERALD ADVISERS, LLC $26,398,808 0.15% 181,485
Large PEAK6 LLC $24,975,482 0.14% 171,700
Mega ROYAL BANK OF CANADA Bank $24,877,876 0.14% 171,029
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $24,397,423 0.14% 167,726
Mega LPL Financial LLC $24,083,812 0.13% 165,570
Large PANAGORA ASSET MANAGEMENT INC $24,078,139 0.13% 165,531
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $22,947,915 0.13% 157,761
Large 1832 Asset Management L.P. $22,039,226 0.12% 151,514
Large Jain Global LLC $21,819,000 0.12% 150,000
Large Jain Global LLC $21,819,000 0.12% 150,000
Large Walleye Capital LLC $21,253,015 0.12% 146,109
Mid Senator Investment Group LP $21,091,700 0.12% 145,000
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $19,585,025 0.11% 134,642
Large NATIXIS ADVISORS, LLC $18,077,332 0.10% 124,277
Key facts CIK 1018963 CUSIP 01741R102 13F (30d) 31 filings 30 filers Visit website Investor relations

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