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 September 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 |
|---|---|---|
| REINHART PARTNERS, LLC. | 1.1M | 34.4% |
| DIMENSIONAL FUND ADVISORS LP | 791.0K | 25.6% |
| Boston Trust Walden Corp | 340.4K | 11.0% |
| PRINCIPAL FINANCIAL GROUP INC | 208.4K | 6.8% |
| CITIGROUP INC | 163.0K | 5.3% |
| Creative Planning | 88.7K | 2.9% |
| Allspring Global Investments Holdings, LLC | 42.6K | 1.4% |
| HARBOR CAPITAL ADVISORS, INC. | 29.4K | 1.0% |
| ARGA Investment Management, LP | 25.1K | 0.8% |
| ISTHMUS PARTNERS, LLC | 19.0K | 0.6% |
| ABN AMRO INVESTMENT SOLUTIONS | 17.5K | 0.6% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 15.9K | 0.5% |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 14.8K | 0.5% |
| Louisiana State Employees Retirement System | 13.2K | 0.4% |
| B. Metzler seel. Sohn & Co. AG | 13.1K | 0.4% |
| State of Alaska, Department of Revenue | 12.0K | 0.4% |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 11.8K | 0.4% |
| Cambridge Investment Research Advisors, Inc. | 11.6K | 0.4% |
| Penbrook Management LLC | 10.5K | 0.3% |
| STRS OHIO | 10.3K | 0.3% |
| Peterson Wealth Services | 9.8K | 0.3% |
| ARIZONA STATE RETIREMENT SYSTEM | 8.7K | 0.3% |
| ProShare Advisors LLC | 8.5K | 0.3% |
| AMALGAMATED BANK | 8.0K | 0.3% |
| YOUSIF CAPITAL MANAGEMENT, LLC | 7.9K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Allspring Global Investments Holdings, LLC | Reduced | 219.4K | 42.6K | -176.8K |
| REINHART PARTNERS, LLC. | Increased | 928.7K | 1.1M | +132.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 709.3K | 791.0K | +81.7K |
| CITIGROUP INC | Reduced | 184.1K | 163.0K | -21.1K |
| Boston Trust Walden Corp | Reduced | 359.3K | 340.4K | -18.8K |
| Cambridge Investment Research Advisors, Inc. | Reduced | 29.6K | 11.6K | -18.0K |
| WESBANCO BANK INC | Sold Out | 12.8K | 0 | -12.8K |
| BOCHK Asset Management Ltd | Sold Out | 10.7K | 0 | -10.7K |
| ARGA Investment Management, LP | Increased | 14.9K | 25.1K | +10.2K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 218.1K | 208.4K | -9.7K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | Increased | 7.8K | 14.8K | +7.0K |
| ProShare Advisors LLC | Reduced | 14.0K | 8.5K | -5.5K |
| Y-Intercept (Hong Kong) Ltd | New | 0 | 5.4K | +5.4K |
| Creative Planning | Increased | 83.5K | 88.7K | +5.3K |
| Maytree Asset Management Ltd | Sold Out | 5.0K | 0 | -5.0K |
| State of Alaska, Department of Revenue | Reduced | 17.0K | 12.0K | -4.9K |
| STRS OHIO | Increased | 5.6K | 10.3K | +4.7K |
| ISTHMUS PARTNERS, LLC | Reduced | 23.6K | 19.0K | -4.6K |
| Calamos Advisors LLC | Sold Out | 4.4K | 0 | -4.4K |
| Atria Investments, Inc | Sold Out | 3.7K | 0 | -3.7K |
| WEALTH EFFECTS LLC | Sold Out | 3.6K | 0 | -3.6K |
| HARBOR CAPITAL ADVISORS, INC. | Increased | 26.0K | 29.4K | +3.4K |
| MACKENZIE FINANCIAL CORP | New | 0 | 2.8K | +2.8K |
| ABN AMRO INVESTMENT SOLUTIONS | Reduced | 20.1K | 17.5K | -2.6K |
| Summit Global Investments | Reduced | 7.3K | 4.7K | -2.6K |
| Capstone Capital Management Ltd | Increased | 2.2K | 4.6K | +2.4K |
| Caitong International Asset Management Co., Ltd | Increased | 1.5K | 3.9K | +2.4K |
| BOKF, NA | Increased | 4.2K | 6.5K | +2.4K |
| Vise Technologies, Inc. | New | 0 | 2.3K | +2.3K |
| Tactive Advisors, LLC | Sold Out | 2.1K | 0 | -2.1K |
| Crossmark Global Holdings, Inc. | Sold Out | 2.0K | 0 | -2.0K |
| Central Pacific Bank - Trust Division | Increased | 3.8K | 5.6K | +1.8K |
| Pinnacle Wealth Planning Services, Inc. | Reduced | 2.8K | 1.2K | -1.6K |
| PROFUND ADVISORS LLC | Sold Out | 1.6K | 0 | -1.6K |
| StoryOne LLC | Sold Out | 1.5K | 0 | -1.5K |
| SAGE RHINO CAPITAL LLC | Sold Out | 1.4K | 0 | -1.4K |
| Koshinski Asset Management, Inc. | Sold Out | 1.4K | 0 | -1.4K |
| CHOREO, LLC | Sold Out | 1.4K | 0 | -1.4K |
| Ethic Inc. | Sold Out | 1.3K | 0 | -1.3K |
| Procyon Advisors, LLC | Sold Out | 1.3K | 0 | -1.3K |
| HB Wealth Management, LLC | Increased | 1.1K | 2.4K | +1.2K |
| Teza Capital Management LLC | Increased | 2.2K | 3.4K | +1.2K |
| EVERGREEN CAPITAL MANAGEMENT LLC | Sold Out | 1.1K | 0 | -1.1K |
| FRANKLIN STREET ADVISORS INC /NC | Sold Out | 1.1K | 0 | -1.1K |
| Fifth Third Wealth Advisors LLC | Sold Out | 1.1K | 0 | -1.1K |
| GFG Capital, LLC | Sold Out | 1.1K | 0 | -1.1K |
| SYM FINANCIAL Corp | Sold Out | 1.1K | 0 | -1.1K |
| PARK AVENUE SECURITIES LLC | Sold Out | 1.1K | 0 | -1.1K |
| EQUITEC PROPRIETARY MARKETS, LLC | Increased | 700 | 1.8K | +1.1K |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | Increased | 6.3K | 7.3K | +988 |
| State of Wyoming | Sold Out | 976 | 0 | -976 |
| Sterling Capital Management LLC | Increased | 110 | 1.0K | +925 |
| VIRGINIA RETIREMENT SYSTEMS ET Al | Reduced | 12.6K | 11.8K | -800 |
| Lido Advisors, LLC | Increased | 4.2K | 4.9K | +780 |
| OPPENHEIMER ASSET MANAGEMENT INC. | Increased | 6.5K | 7.3K | +752 |
| Parkside Financial Bank & Trust | Reduced | 827 | 123 | -704 |
| SALEM INVESTMENT COUNSELORS INC | Sold Out | 685 | 0 | -685 |
| COMMONWEALTH EQUITY SERVICES, LLC | Reduced | 2.5K | 1.9K | -603 |
| Peterson Wealth Services | Increased | 9.2K | 9.8K | +560 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | Increased | 5.6K | 6.1K | +484 |
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.