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; 441 institutions reported holding it in 13F filings for Q2 2026, worth $5.87B 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
- +754.8K (+2.5%) vs. Q3 2025
- Total value
- $2.52B
- −$455.9M (−15.3%) 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 | 441 | $5.87B |
| Q1 2026 | 380 | $3.03B |
| Q4 2025 | 373 | $2.52B |
| Q3 2025 | 362 | $2.98B |
| Q2 2025 | 330 | $2.22B |
| Q1 2025 | 307 | $1.54B |
| Q4 2024 | 325 | $2.16B |
| Q3 2024 | 369 | $3.19B |
| Q2 2024 | 392 | $4.38B |
| Q1 2024 | 384 | $3.57B |
| Q4 2023 | 421 | $3.95B |
| Q3 2023 | 421 | $4.85B |
| Q2 2023 | 406 | $5.41B |
| Q1 2023 | 379 | $4.00B |
| Q4 2022 | 328 | $2.32B |
| Q3 2022 | 287 | $1.72B |
| Q2 2022 | 277 | $1.52B |
| Q1 2022 | 290 | $2.05B |
| Q4 2021 | 254 | $2.06B |
| Q3 2021 | 204 | $1.37B |
| Q2 2021 | 188 | $1.17B |
| Q1 2021 | 192 | $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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,827,575 | $387.8M | 0.01% | −36,598−0.8% | Reduced |
| Vanguard Group Inc | 4,122,529 | $331.2M | 0.00% | −63,172−1.5% | Reduced |
| Victory Capital Management Inc | 1,807,404 | $145.2M | 0.08% | +835,242+85.9% | Added |
| Reinhart Partners, Inc. | 1,589,898 | $127.7M | 3.83% | −20,434−1.3% | Reduced |
| American Century Companies Inc | 1,233,646 | $99.1M | 0.05% | −112,115−8.3% | Reduced |
| State Street Corp | 1,186,227 | $95.3M | 0.00% | −43,889−3.6% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,091,094 | $87.7M | 0.10% | +160,732+17.3% | Added |
| Geode Capital Management, LLC | 917,747 | $73.7M | 0.00% | −8,992−1.0% | Reduced |
| Dimensional Fund Advisors LP | 841,040 | $67.6M | 0.01% | +71,428+9.3% | Added |
| Primecap Management Co | 664,942 | $53.4M | 0.04% | −168,734−20.2% | Reduced |
| Goldman Sachs Group Inc | 629,814 | $50.6M | 0.01% | +135,039+27.3% | Added |
| FMR LLC | 610,603 | $49.1M | 0.00% | +59,205+10.7% | Added |
| Invesco Ltd. | 478,897 | $38.5M | 0.00% | +92,162+23.8% | Added |
| D. E. Shaw & Co., Inc. | 470,285 | $37.8M | 0.03% | +315,947+204.7% | Added |
| Boston Partners | 422,435 | $35.1M | 0.04% | −46,306−9.9% | Reduced |
| Charles Schwab Investment Management Inc | 431,195 | $34.6M | 0.01% | +4,082+1.0% | Added |
| LSV Asset Management | 429,500 | $34.5M | 0.08% | +114,600+36.4% | Added |
| Boston Trust Walden Corp | 427,736 | $34.4M | 0.26% | −32,551−7.1% | Reduced |
| Northern Trust Corp | 405,146 | $32.5M | 0.00% | −29,842−6.9% | Reduced |
| Price T Rowe Associates Inc | 383,056 | $30.8M | 0.00% | −149,052−28.0% | Reduced |
| JPMorgan Chase & Co | 357,502 | $28.7M | 0.00% | −77,286−17.8% | Reduced |
| Morgan Stanley | 350,220 | $28.1M | 0.00% | −103,867−22.9% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 322,849 | $25.9M | 0.07% | −121,014−27.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 266,015 | $22.9M | 0.04% | +156,387+142.7% | Added |
| Federated Hermes, Inc. | 276,266 | $22.2M | 0.04% | +58,464+26.8% | Added |
| Balyasny Asset Management LLC | 243,503 | $19.6M | 0.04% | +241,177+10,368.7% | Added |
| Voloridge Investment Management, LLC | 220,713 | $17.7M | 0.06% | +125,486+131.8% | Added |
| UBS Group AG | 213,388 | $17.1M | 0.00% | +86,065+67.6% | Added |
| Arrowstreet Capital, Limited Partnership | 212,050 | $17.0M | 0.01% | +94,253+80.0% | Added |
| Kennedy Capital Management, Inc. | 205,737 | $16.5M | 0.35% | +22,637+12.4% | Added |
| Bank of New York Mellon Corp | 203,536 | $16.4M | 0.00% | −15,882−7.2% | Reduced |
| Principal Financial Group Inc | 200,025 | $16.1M | 0.01% | +14,757+8.0% | Added |
| Citadel Advisors LLC | 176,047 | $14.1M | 0.01% | +149,220+556.2% | Added |
| BNP Paribas Arbitrage, SA | 164,027 | $13.2M | 0.01% | −119,899−42.2% | Reduced |
| Squarepoint Ops LLC | 153,703 | $12.3M | 0.02% | +24,832+19.3% | Added |
| First Eagle Investment Management, LLC | 136,318 | $11.0M | 0.02% | +5,960+4.6% | Added |
| Millennium Management LLC | 130,090 | $10.5M | 0.01% | −131,686−50.3% | Reduced |
| Public Sector Pension Investment Board | 129,777 | $10.4M | 0.04% | +7,213+5.9% | Added |
| Bank of America Corp | 118,206 | $9.50M | 0.00% | −292,108−71.2% | Reduced |
| Royce & Associates LP | 116,375 | $9.35M | 0.09% | −28,333−19.6% | Reduced |
| Citigroup Inc | 110,470 | $8.88M | 0.01% | −213,884−65.9% | Reduced |
| Clark Capital Management Group, Inc. | 110,294 | $8.86M | 0.05% | +13,706+14.2% | Added |
| Segall Bryant & Hamill, LLC | 102,187 | $8.21M | 0.11% | +43,576+74.3% | Added |
| BlackBarn Capital Partners LP | 96,573 | $7.76M | 2.78% | −103,427−51.7% | Reduced |
| First Trust Advisors LP | 88,396 | $7.10M | 0.01% | +33,153+60.0% | Added |
| Norges Bank | 88,147 | $7.08M | 0.00% | +88,147 | New |
| Rhumbline Advisers | 88,109 | $7.08M | 0.01% | −8,788−9.1% | Reduced |
| Zacks Investment Management | 88,080 | $7.08M | 0.06% | +67,867+335.8% | Added |
| Ameriprise Financial Inc | 86,057 | $6.91M | 0.00% | −32,076−27.2% | Reduced |
| Wells Fargo & Company | 79,752 | $6.41M | 0.00% | +6,729+9.2% | Added |
| Jane Street Group, LLC | 79,049 | $6.35M | 0.01% | +50,440+176.3% | Added |
| Legal & General Group Plc | 78,055 | $6.27M | 0.00% | −4,961−6.0% | Reduced |
| Barclays PLC | 75,982 | $6.10M | 0.00% | +6,397+9.2% | Added |
| Creative Planning | 73,500 | $5.90M | 0.00% | +866+1.2% | Added |
| Two Sigma Investments, LP | 71,244 | $5.72M | 0.01% | +34,079+91.7% | Added |
| Nuveen, LLC | 70,393 | $5.66M | 0.00% | −2,889−3.9% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 68,213 | $5.48M | 0.08% | −2,873−4.0% | Reduced |
| Renaissance Technologies LLC | 66,899 | $5.37M | 0.01% | +66,899 | New |
| Swiss National Bank | 61,200 | $4.92M | 0.00% | −1,100−1.8% | Reduced |
| UBS Asset Management Americas Inc | 61,097 | $4.91M | 0.00% | −5,001−7.6% | Reduced |
| Paradigm Capital Management Inc | 56,000 | $4.50M | 0.19% | −100−0.2% | Reduced |
| Globeflex Capital L P | 55,997 | $4.50M | 0.69% | 00.0% | Unchanged |
| QSM Asset Management Ltd | 53,166 | $4.27M | 2.44% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 52,497 | $4.22M | 0.00% | +9,801+23.0% | Added |
| State of Wisconsin Investment Board | 50,506 | $4.06M | 0.01% | +292+0.6% | Added |
| Soviero Asset Management, LP | 46,000 | $3.70M | 1.93% | +15,000+48.4% | Added |
| Harbor Capital Advisors, Inc. | 44,687 | $3.59M | 0.28% | −338−0.8% | Reduced |
| Janus Henderson Group PLC | 41,776 | $3.36M | 0.00% | −193,636−82.3% | Reduced |
| Isthmus Partners, LLC | 41,480 | $3.33M | 0.37% | −536−1.3% | Reduced |
| Ossiam | 40,700 | $3.27M | 0.07% | 00.0% | Unchanged |
| Intech Investment Management LLC | 40,463 | $3.25M | 0.03% | +22,792+129.0% | Added |
| F/M Investments LLC | 40,294 | $3.24M | 0.12% | +19,226+91.3% | Added |
| Prudential Financial Inc | 39,565 | $3.18M | 0.00% | −4,820−10.9% | Reduced |
| Private Advisor Group, LLC | 38,482 | $3.09M | 0.01% | −7,413−16.2% | Reduced |
| Bessemer Group Inc | 37,972 | $3.05M | 0.00% | +37,748+16,851.8% | Added |
| AQR Capital Management LLC | 37,581 | $3.02M | 0.00% | +930+2.5% | Added |
| Amundi | 37,274 | $2.99M | 0.00% | +3,256+9.6% | Added |
| Bridgeway Capital Management, LLC | 36,000 | $2.89M | 0.06% | +5,000+16.1% | Added |
| LPL Financial LLC | 34,574 | $2.78M | 0.00% | −14,394−29.4% | Reduced |
| Alliancebernstein L.P. | 34,246 | $2.75M | 0.00% | −35,398−50.8% | Reduced |
| Franklin Resources Inc | 33,248 | $2.67M | 0.00% | −41,424−55.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 29,121 | $2.51M | 0.00% | −25,100−46.3% | Reduced |
| California State Teachers Retirement System | 30,030 | $2.41M | 0.00% | −101−0.3% | Reduced |
| Bridges Investment Management Inc | 28,400 | $2.28M | 0.03% | −3,299−10.4% | Reduced |
| SEI Investments Co | 27,976 | $2.25M | 0.00% | +13,900+98.7% | Added |
| Quest Partners LLC | 26,367 | $2.12M | 0.12% | +12,574+91.2% | Added |
| Great West Life Assurance Co | 26,302 | $2.11M | 0.00% | −6,683−20.3% | Reduced |
| Deutsche Bank AG | 25,920 | $2.08M | 0.00% | +473+1.9% | Added |
| Algert Global LLC | 25,340 | $2.04M | 0.03% | −5,770−18.5% | Reduced |
| Abn Amro Investment Solutions | 24,798 | $1.99M | 0.03% | +7,408+42.6% | Added |
| Burney Co | 24,721 | $1.99M | 0.06% | +24,721 | New |
| HSBC Holdings PLC | 24,508 | $1.98M | 0.00% | +3,747+18.0% | Added |
| Stifel Financial Corp | 24,347 | $1.96M | 0.00% | +2,611+12.0% | Added |
| Aquatic Capital Management LLC | 22,642 | $1.82M | 0.05% | +22,642 | New |
| State of Alaska, Department of Revenue | 22,568 | $1.81M | 0.02% | +6,758+42.7% | Added |
| Elo Mutual Pension Insurance Co | 22,446 | $1.80M | 0.03% | +22,446 | New |
| Janney Montgomery Scott LLC | 22,436 | $1.80M | 0.00% | −13,093−36.9% | Reduced |
| Jackson Creek Investment Advisors LLC | 22,054 | $1.77M | 0.52% | −245−1.1% | Reduced |
| Thrivent Financial for Lutherans | 21,301 | $1.71M | 0.00% | −1,366−6.0% | Reduced |
| Schonfeld Strategic Advisors LLC | 21,182 | $1.70M | 0.01% | −16,455−43.7% | Reduced |