ACLS Axcelis Technologies, Inc.
Axcelis Technologies, Inc. (ACLS) Institutional Ownership
What the institutions did with ACLS 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. | 5.0M | 16.2% |
| FMR LLC | 4.1M | 13.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.5M | 8.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | 4.5% |
| STATE STREET CORP | 1.2M | 4.0% |
| VICTORY CAPITAL MANAGEMENT INC | 1.1M | 3.7% |
| REINHART PARTNERS, LLC. | 928.7K | 3.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 833.6K | 2.7% |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 803.2K | 2.6% |
| DIMENSIONAL FUND ADVISORS LP | 709.3K | 2.3% |
| Balyasny Asset Management L.P. | 616.2K | 2.0% |
| PRIMECAP MANAGEMENT CO/CA/ | 610.5K | 2.0% |
| Invesco Ltd. | 527.7K | 1.7% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 416.2K | 1.3% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 394.5K | 1.3% |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 392.2K | 1.3% |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 383.8K | 1.2% |
| NORTHERN TRUST CORP | 382.0K | 1.2% |
| AMERICAN CENTURY COMPANIES INC | 369.9K | 1.2% |
| MORGAN STANLEY | 366.1K | 1.2% |
| Boston Trust Walden Corp | 359.3K | 1.2% |
| EMERALD ADVISERS, LLC | 330.5K | 1.1% |
| UBS Group AG | 320.9K | 1.0% |
| Boston Partners | 303.9K | 1.0% |
| GOLDMAN SACHS GROUP INC | 235.3K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Increased | 2.4M | 4.1M | +1.7M |
| Balyasny Asset Management L.P. | Reduced | 1.4M | 616.2K | -748.3K |
| REINHART PARTNERS, LLC. | Reduced | 1.7M | 928.7K | -729.1K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 951.9K | 369.9K | -582.0K |
| D. E. Shaw & Co., Inc. | Reduced | 544.4K | 133.0K | -411.4K |
| LSV ASSET MANAGEMENT | Reduced | 429.5K | 24.6K | -404.9K |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Increased | 57 | 392.2K | +392.2K |
| Invesco Ltd. | Increased | 165.1K | 527.7K | +362.6K |
| GOLDMAN SACHS GROUP INC | Reduced | 497.6K | 235.3K | -262.4K |
| EMERALD ADVISERS, LLC | Increased | 96.2K | 330.5K | +234.2K |
| MORGAN STANLEY | Reduced | 581.6K | 366.1K | -215.6K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduced | 1.0M | 803.2K | -202.9K |
| SEGALL BRYANT & HAMILL, LLC | Sold Out | 200.4K | 0 | -200.4K |
| Grantham, Mayo, Van Otterloo & Co. LLC | Reduced | 334.8K | 135.6K | -199.2K |
| JPMORGAN CHASE & CO | Reduced | 222.7K | 44.0K | -178.7K |
| EMERALD MUTUAL FUND ADVISERS TRUST | Increased | 47.4K | 219.4K | +172.0K |
| CITIGROUP INC | Increased | 24.6K | 184.1K | +159.5K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 197.6K | 48.4K | -149.1K |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | 1.3M | 1.1M | -145.0K |
| ALPINE ASSOCIATES MANAGEMENT INC. | New | 0 | 134.9K | +134.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 844.1K | 709.3K | -134.8K |
| MILLENNIUM MANAGEMENT LLC | Increased | 12.5K | 139.2K | +126.7K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | 491.7K | 383.8K | -108.0K |
| Weiss Asset Management LP | New | 0 | 103.3K | +103.3K |
| BlackRock, Inc. | Increased | 4.9M | 5.0M | +92.7K |
| KENNEDY CAPITAL MANAGEMENT LLC | Reduced | 178.0K | 95.0K | -83.0K |
| Portolan Capital Management, LLC | Sold Out | 77.2K | 0 | -77.2K |
| FEDERATED HERMES, INC. | Reduced | 209.2K | 132.3K | -76.9K |
| Alberta Investment Management Corp | Increased | 35.8K | 107.3K | +71.5K |
| WELLINGTON MANAGEMENT GROUP LLP | New | 0 | 69.0K | +69.0K |
| Susquehanna Portfolio Strategies, LLC | Sold Out | 68.2K | 0 | -68.2K |
| ROYCE & ASSOCIATES LP | Reduced | 125.3K | 65.7K | -59.6K |
| BESSEMER GROUP INC | Increased | 38.0K | 95.0K | +57.0K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 144.7K | 87.7K | -57.0K |
| UBS Group AG | Reduced | 377.2K | 320.9K | -56.3K |
| Sagefield Capital LP | Increased | 82.2K | 133.8K | +51.5K |
| QSM Asset Management Ltd | Reduced | 51.6K | 1.3K | -50.2K |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 658.7K | 610.5K | -48.2K |
| Old West Investment Management, LLC | Increased | 42.5K | 90.3K | +47.9K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold Out | 44.2K | 0 | -44.2K |
| First Eagle Investment Management, LLC | Increased | 100.6K | 143.9K | +43.3K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Increased | 7.5K | 50.8K | +43.3K |
| STATE STREET CORP | Increased | 1.2M | 1.2M | +42.1K |
| Holocene Advisors, LP | Reduced | 51.6K | 9.6K | -42.0K |
| CITADEL ADVISORS LLC | Increased | 4.5K | 46.2K | +41.7K |
| Allianz Asset Management GmbH | Sold Out | 40.1K | 0 | -40.1K |
| Allspring Global Investments Holdings, LLC | Reduced | 258.5K | 219.4K | -39.2K |
| DEUTSCHE BANK AG\ | Increased | 28.9K | 67.8K | +39.0K |
| Polar Asset Management Partners Inc. | New | 0 | 38.7K | +38.7K |
| Empowered Funds, LLC | Reduced | 39.1K | 2.4K | -36.7K |
| Boston Partners | Reduced | 340.3K | 303.9K | -36.3K |
| RAYMOND JAMES FINANCIAL INC | Increased | 2.6K | 38.0K | +35.4K |
| Informed Momentum Co LLC | New | 0 | 35.1K | +35.1K |
| NORTHERN TRUST CORP | Reduced | 416.7K | 382.0K | -34.7K |
| TORONTO DOMINION BANK | Sold Out | 34.0K | 0 | -34.0K |
| OSSIAM | Reduced | 40.7K | 7.3K | -33.4K |
| Squarepoint Ops LLC | Sold Out | 33.3K | 0 | -33.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 362.2K | 394.5K | +32.3K |
| Verition Fund Management LLC | New | 0 | 30.0K | +30.0K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 445.8K | 416.2K | -29.5K |
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.