ATI ATI Inc.
ATI Inc. (ATI) Institutional Ownership
What the institutions did with ATI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 18.7M | 14.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2M | 4.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.2M | 4.8% |
| Capital World Investors | 5.2M | 4.1% |
| STATE STREET CORP | 5.2M | 4.1% |
| Capital Research Global Investors | 5.1M | 4.0% |
| FMR LLC | 5.0M | 3.9% |
| Capital International Investors | 3.7M | 2.9% |
| Invesco Ltd. | 3.4M | 2.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.8M | 2.2% |
| Qube Research & Technologies Ltd | 2.1M | 1.7% |
| MORGAN STANLEY | 1.9M | 1.5% |
| BANK OF AMERICA CORP /DE/ | 1.8M | 1.4% |
| NORGES BANK | 1.7M | 1.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.5M | 1.2% |
| AQR CAPITAL MANAGEMENT LLC | 1.4M | 1.1% |
| JANE STREET GROUP, LLC | 1.4M | 1.1% |
| Assenagon Asset Management S.A. | 1.3M | 1.0% |
| NORTHERN TRUST CORP | 1.3M | 1.0% |
| Point72 Asset Management, L.P. | 1.2M | 1.0% |
| DIMENSIONAL FUND ADVISORS LP | 1.2M | 0.9% |
| VIKING GLOBAL INVESTORS LP | 1.2M | 0.9% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.1M | 0.9% |
| BOWEN HANES & CO INC | 1.0M | 0.8% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.0M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 16.4M | 18.7M | +2.3M |
| VIKING GLOBAL INVESTORS LP | Reduced | 3.3M | 1.2M | -2.2M |
| Capital International Investors | Reduced | 5.9M | 3.7M | -2.2M |
| Qube Research & Technologies Ltd | Increased | 858.8K | 2.1M | +1.3M |
| Capital Research Global Investors | Reduced | 6.2M | 5.1M | -1.1M |
| UBS Group AG | Reduced | 1.4M | 464.7K | -954.4K |
| BESSEMER GROUP INC | Increased | 2.1K | 955.0K | +952.9K |
| D. E. Shaw & Co., Inc. | Reduced | 1.7M | 815.6K | -927.0K |
| POLEN CAPITAL MANAGEMENT LLC | New | 0 | 819.2K | +819.2K |
| PNC FINANCIAL SERVICES GROUP, INC. | Reduced | 831.7K | 35.2K | -796.5K |
| Assenagon Asset Management S.A. | Increased | 584.0K | 1.3M | +730.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 328.7K | 1.0M | +693.1K |
| Point72 Asset Management, L.P. | Reduced | 1.9M | 1.2M | -692.2K |
| PRUDENTIAL FINANCIAL INC | Reduced | 810.0K | 181.3K | -628.7K |
| TWO SIGMA INVESTMENTS, LP | Increased | 17.8K | 636.7K | +618.9K |
| Holocene Advisors, LP | Reduced | 1.1M | 497.6K | -600.0K |
| SG Americas Securities, LLC | Reduced | 1.1M | 489.5K | -585.9K |
| Capital World Investors | Reduced | 5.7M | 5.2M | -463.7K |
| DSM CAPITAL PARTNERS LLC | New | 0 | 441.0K | +441.0K |
| Invesco Ltd. | Reduced | 3.9M | 3.4M | -406.4K |
| BANK OF AMERICA CORP /DE/ | Increased | 1.4M | 1.8M | +402.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 5.8M | 6.2M | +398.4K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 1.2M | 839.8K | -363.9K |
| Balyasny Asset Management L.P. | Reduced | 851.7K | 514.1K | -337.6K |
| 1832 Asset Management L.P. | Increased | 151.5K | 459.5K | +308.0K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 1.1M | 765.8K | -303.5K |
| GOLDMAN SACHS GROUP INC | Increased | 447.8K | 751.3K | +303.5K |
| Thrivent Financial for Lutherans | Increased | 50.4K | 338.6K | +288.2K |
| Clearbridge Investments, LLC | New | 0 | 280.4K | +280.4K |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | 694.4K | 420.0K | -274.5K |
| DENDUR CAPITAL LP | Reduced | 1.3M | 1.0M | -274.1K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 652.0K | 922.9K | +270.9K |
| FMR LLC | Reduced | 5.2M | 5.0M | -258.0K |
| MILLENNIUM MANAGEMENT LLC | Increased | 619.2K | 875.3K | +256.0K |
| Jain Global LLC | Reduced | 264.5K | 31.7K | -232.8K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 1.2M | 1.4M | +210.4K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.4M | 1.2M | -206.5K |
| MORGAN STANLEY | Increased | 1.7M | 1.9M | +196.6K |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Reduced | 402.6K | 207.9K | -194.7K |
| CITADEL ADVISORS LLC | Increased | 303.3K | 497.4K | +194.1K |
| Yaupon Capital Management LP | New | 0 | 180.2K | +180.2K |
| ENVESTNET ASSET MANAGEMENT INC | Increased | 215.8K | 391.4K | +175.6K |
| MARSHALL WACE, LLP | Increased | 536.5K | 709.6K | +173.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 2.9M | 2.8M | -169.8K |
| EMERALD ADVISERS, LLC | Reduced | 181.5K | 15.9K | -165.6K |
| Nuveen, LLC | Increased | 578.6K | 737.1K | +158.5K |
| Schonfeld Strategic Advisors LLC | Increased | 23.5K | 177.8K | +154.2K |
| CANADA PENSION PLAN INVESTMENT BOARD | Increased | 167.7K | 321.5K | +153.8K |
| STATE STREET CORP | Reduced | 5.4M | 5.2M | -143.7K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 35.3K | 178.3K | +142.9K |
| AMERIPRISE FINANCIAL INC | Reduced | 998.8K | 858.2K | -140.6K |
| JUPITER ASSET MANAGEMENT LTD | Reduced | 341.7K | 202.6K | -139.1K |
| WELLS FARGO & COMPANY/MN | Increased | 351.1K | 483.7K | +132.5K |
| Amundi | Increased | 261.2K | 388.6K | +127.4K |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Reduced | 782.5K | 658.4K | -124.1K |
| HRT FINANCIAL LP | Reduced | 252.9K | 131.0K | -121.9K |
| Artemis Investment Management LLP | Increased | 721.5K | 841.5K | +120.0K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Sold Out | 117.1K | 0 | -117.1K |
| CITIGROUP INC | Increased | 75.6K | 192.2K | +116.6K |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | Reduced | 382.4K | 269.2K | -113.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.