Axcelis Technologies Inc
ACLS- Exchange
- Nasdaq
- Industry
- Special Industry Machinery, NEC
- SEC CIK
- 0001113232
No open-market purchases or sales by Axcelis Technologies Inc insiders were filed in the last 90 days; 442 institutions reported holding it in 13F filings for Q2 2026, worth $5.85B in total; Maverick Capital is the only superinvestor holding it.
13F holders, Q4 2025
Institutional positions in Axcelis Technologies 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
- 373
- +16 vs. Q3 2025
- Shares held
- 31.3M
- +955.3K (+3.1%) vs. Q3 2025
- Total value
- $2.52B
- −$433.0M (−14.7%) vs. Q3 2025
- New holders
- 67
- 121 more added
- Sold out
- 51
- 121 more reduced
5 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 ACLS 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 | 442 | $5.85B |
| Q1 2026 | 380 | $3.03B |
| Q4 2025 | 373 | $2.52B |
| Q3 2025 | 362 | $2.96B |
| Q2 2025 | 330 | $2.20B |
| Q1 2025 | 307 | $1.54B |
| Q4 2024 | 325 | $2.16B |
| Q3 2024 | 369 | $3.17B |
| Q2 2024 | 393 | $4.35B |
| Q1 2024 | 385 | $3.37B |
| Q4 2023 | 421 | $3.81B |
| Q3 2023 | 421 | $4.85B |
| Q2 2023 | 406 | $5.41B |
| Q1 2023 | 379 | $3.86B |
| Q4 2022 | 327 | $2.31B |
| Q3 2022 | 287 | $1.72B |
| Q2 2022 | 277 | $1.52B |
| Q1 2022 | 290 | $2.05B |
| Q4 2021 | 254 | $2.05B |
| Q3 2021 | 205 | $1.37B |
| Q2 2021 | 189 | $1.17B |
| Q1 2021 | 193 | $1.20B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Axcelis Technologies Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Prudential Financial Inc | 39,565 | $3.18M | 0.00% | −4,820−10.9% | Reduced |
| F/M Investments LLC | 40,294 | $3.24M | 0.12% | +19,226+91.3% | Added |
| Intech Investment Management LLC | 40,463 | $3.25M | 0.03% | +22,792+129.0% | Added |
| Ossiam | 40,700 | $3.27M | 0.07% | 00.0% | Unchanged |
| Isthmus Partners, LLC | 41,480 | $3.33M | 0.37% | −536−1.3% | Reduced |
| Janus Henderson Group PLC | 41,776 | $3.36M | 0.00% | −193,636−82.3% | Reduced |
| Harbor Capital Advisors, Inc. | 44,687 | $3.59M | 0.28% | −338−0.8% | Reduced |
| Soviero Asset Management, LP | 46,000 | $3.70M | 1.93% | +15,000+48.4% | Added |
| State of Wisconsin Investment Board | 50,506 | $4.06M | 0.01% | +292+0.6% | Added |
| Envestnet Asset Management Inc | 52,497 | $4.22M | 0.00% | +9,801+23.0% | Added |
| QSM Asset Management Ltd | 53,166 | $4.27M | 2.44% | 00.0% | Unchanged |
| Globeflex Capital L P | 55,997 | $4.50M | 0.69% | 00.0% | Unchanged |
| Paradigm Capital Management Inc | 56,000 | $4.50M | 0.19% | −100−0.2% | Reduced |
| UBS Asset Management Americas Inc | 61,097 | $4.91M | 0.00% | −5,001−7.6% | Reduced |
| Swiss National Bank | 61,200 | $4.92M | 0.00% | −1,100−1.8% | Reduced |
| Renaissance Technologies LLC | 66,899 | $5.37M | 0.01% | +66,899 | New |
| Susquehanna Portfolio Strategies, LLC | 68,213 | $5.48M | 0.08% | −2,873−4.0% | Reduced |
| Nuveen, LLC | 70,393 | $5.66M | 0.00% | −2,889−3.9% | Reduced |
| Two Sigma Investments, LP | 71,244 | $5.72M | 0.01% | +34,079+91.7% | Added |
| Creative Planning | 73,500 | $5.90M | 0.00% | +866+1.2% | Added |
| Barclays PLC | 75,982 | $6.10M | 0.00% | +6,397+9.2% | Added |
| Legal & General Group Plc | 78,055 | $6.27M | 0.00% | −4,961−6.0% | Reduced |
| Jane Street Group, LLC | 79,049 | $6.35M | 0.01% | +50,440+176.3% | Added |
| Wells Fargo & Company | 79,752 | $6.41M | 0.00% | +6,729+9.2% | Added |
| Ameriprise Financial Inc | 86,057 | $6.91M | 0.00% | −32,076−27.2% | Reduced |
| Zacks Investment Management | 88,080 | $7.08M | 0.06% | +67,867+335.8% | Added |
| Rhumbline Advisers | 88,109 | $7.08M | 0.01% | −8,788−9.1% | Reduced |
| Norges Bank | 88,147 | $7.08M | 0.00% | +88,147 | New |
| First Trust Advisors LP | 88,396 | $7.10M | 0.01% | +33,153+60.0% | Added |
| BlackBarn Capital Partners LP | 96,573 | $7.76M | 2.78% | −103,427−51.7% | Reduced |
| Segall Bryant & Hamill, LLC | 102,187 | $8.21M | 0.11% | +43,576+74.3% | Added |
| Clark Capital Management Group, Inc. | 110,294 | $8.86M | 0.05% | +13,706+14.2% | Added |
| Citigroup Inc | 110,470 | $8.88M | 0.01% | −213,884−65.9% | Reduced |
| Royce & Associates LP | 116,375 | $9.35M | 0.09% | −28,333−19.6% | Reduced |
| Bank of America Corp | 118,206 | $9.50M | 0.00% | −292,108−71.2% | Reduced |
| Public Sector Pension Investment Board | 129,777 | $10.4M | 0.04% | +7,213+5.9% | Added |
| Millennium Management LLC | 130,090 | $10.5M | 0.01% | −131,686−50.3% | Reduced |
| First Eagle Investment Management, LLC | 136,318 | $11.0M | 0.02% | +5,960+4.6% | Added |
| Squarepoint Ops LLC | 153,703 | $12.3M | 0.02% | +24,832+19.3% | Added |
| BNP Paribas Arbitrage, SA | 164,027 | $13.2M | 0.01% | −119,899−42.2% | Reduced |
| Citadel Advisors LLC | 176,047 | $14.1M | 0.01% | +149,220+556.2% | Added |
| Principal Financial Group Inc | 200,025 | $16.1M | 0.01% | +14,757+8.0% | Added |
| Bank of New York Mellon Corp | 203,536 | $16.4M | 0.00% | −15,882−7.2% | Reduced |
| Kennedy Capital Management, Inc. | 205,737 | $16.5M | 0.35% | +22,637+12.4% | Added |
| Arrowstreet Capital, Limited Partnership | 212,050 | $17.0M | 0.01% | +94,253+80.0% | Added |
| UBS Group AG | 213,388 | $17.1M | 0.00% | +86,065+67.6% | Added |
| Voloridge Investment Management, LLC | 220,713 | $17.7M | 0.06% | +125,486+131.8% | Added |
| Balyasny Asset Management LLC | 243,503 | $19.6M | 0.04% | +241,177+10,368.7% | Added |
| Federated Hermes, Inc. | 276,266 | $22.2M | 0.04% | +58,464+26.8% | Added |
| Allspring Global Investments Holdings, LLC | 266,015 | $22.9M | 0.04% | +156,387+142.7% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 322,849 | $25.9M | 0.07% | −121,014−27.3% | Reduced |
| Morgan Stanley | 350,220 | $28.1M | 0.00% | −103,867−22.9% | Reduced |
| JPMorgan Chase & Co | 357,502 | $28.7M | 0.00% | +140,108+64.4% | Added |
| Price T Rowe Associates Inc | 383,056 | $30.8M | 0.00% | −149,052−28.0% | Reduced |
| Northern Trust Corp | 405,146 | $32.5M | 0.00% | −29,842−6.9% | Reduced |
| Boston Trust Walden Corp | 427,736 | $34.4M | 0.26% | −32,551−7.1% | Reduced |
| LSV Asset Management | 429,500 | $34.5M | 0.08% | +114,600+36.4% | Added |
| Charles Schwab Investment Management Inc | 431,195 | $34.6M | 0.01% | +4,082+1.0% | Added |
| Boston Partners | 422,435 | $35.1M | 0.04% | −46,306−9.9% | Reduced |
| D. E. Shaw & Co., Inc. | 470,285 | $37.8M | 0.03% | +315,947+204.7% | Added |
| Invesco Ltd. | 478,897 | $38.5M | 0.00% | +92,162+23.8% | Added |
| FMR LLC | 610,603 | $49.1M | 0.00% | +59,205+10.7% | Added |
| Goldman Sachs Group Inc | 629,814 | $50.6M | 0.01% | +135,039+27.3% | Added |
| Primecap Management Co | 664,942 | $53.4M | 0.04% | −168,734−20.2% | Reduced |
| Dimensional Fund Advisors LP | 841,040 | $67.6M | 0.01% | +71,428+9.3% | Added |
| Geode Capital Management, LLC | 917,747 | $73.7M | 0.00% | −8,992−1.0% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,091,094 | $87.7M | 0.10% | +160,732+17.3% | Added |
| State Street Corp | 1,186,227 | $95.3M | 0.00% | −43,889−3.6% | Reduced |
| American Century Companies Inc | 1,233,646 | $99.1M | 0.05% | −112,115−8.3% | Reduced |
| Reinhart Partners, Inc. | 1,589,898 | $127.7M | 3.83% | −20,434−1.3% | Reduced |
| Victory Capital Management Inc | 1,807,404 | $145.2M | 0.08% | +835,242+85.9% | Added |
| Vanguard Group Inc | 4,122,529 | $331.2M | 0.00% | −63,172−1.5% | Reduced |
| BlackRock, Inc. | 4,827,575 | $387.8M | 0.01% | −36,598−0.8% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −36,000−100.0% | Sold out |
| Jackson Square Partners, LLC | 0 | $0 | 0.00% | −27,335−100.0% | Sold out |
| New Insight Wealth Advisors | 0 | $0 | 0.00% | −27,013−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −25,684−100.0% | Sold out |
| Chase Investment Counsel Corp | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Andra AP-fonden | 0 | $0 | 0.00% | −19,990−100.0% | Sold out |
| Oppenheimer Asset Management Inc. | 0 | $0 | 0.00% | −14,747−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −14,529−100.0% | Sold out |
| Rede Wealth, LLC | 0 | $0 | 0.00% | −11,495−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −10,448−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −9,618−100.0% | Sold out |
| Ausbil Investment Management Ltd | 0 | $0 | 0.00% | −9,234−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −7,315−100.0% | Sold out |
| Kerrisdale Advisers, LLC | 0 | $0 | 0.00% | −7,265−100.0% | Sold out |
| Horizon Investments, LLC | 0 | $0 | 0.00% | −7,194−100.0% | Sold out |
| Veracity Capital LLC | 0 | $0 | 0.00% | −6,114−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −5,979−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −4,820−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −4,618−100.0% | Sold out |
| SkyOak Wealth, LLC | 0 | $0 | 0.00% | −4,177−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −3,386−100.0% | Sold out |
| Stratos Wealth Partners, LTD. | 0 | $0 | 0.00% | −2,594−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −2,518−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −2,503−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −2,500−100.0% | Sold out |
| NJ State Employees Deferred Compensation Plan | 0 | $0 | 0.00% | −2,358−100.0% | Sold out |
| Crossmark Global Holdings, Inc. | 0 | $0 | 0.00% | −2,356−100.0% | Sold out |