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, Q1 2026
Institutional positions in Axcelis Technologies Inc as of Mar 31, 2026. 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
- 380
- +12 vs. Q4 2025
- Shares held
- 32.6M
- +5.48M (+20.2%) vs. Q4 2025
- Total value
- $3.03B
- +$851.0M (+39.0%) vs. Q4 2025
- New holders
- 70
- 99 more added
- Sold out
- 58
- 134 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Axcelis Technologies Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Twinbeech Capital LP | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −17,765−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −13,619−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −11,167−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −9,333−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −7,519−100.0% | Sold out |
| Unique Wealth Strategies, LLC | 0 | $0 | 0.00% | −7,060−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −5,762−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −5,600−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −4,576−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −4,122−100.0% | Sold out |
| Truist Financial Corp | 0 | $0 | 0.00% | −3,244−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −3,210−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −3,200−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −3,168−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −3,114−100.0% | Sold out |
| Occidental Asset Management, LLC | 0 | $0 | 0.00% | −2,810−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −2,193−100.0% | Sold out |
| St Germain D J Co Inc | 0 | $0 | 0.00% | −2,188−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −719−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −478−100.0% | Sold out |
| REAP Financial Group, LLC | 0 | $0 | 0.00% | −308−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −302−100.0% | Sold out |
| Richardson Financial Services Inc. | 0 | $0 | 0.00% | −277−100.0% | Sold out |
| Raleigh Capital Management Inc. | 0 | $0 | 0.00% | −194−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −166−100.0% | Sold out |
| Cullen/Frost Bankers, Inc. | 0 | $0 | 0.00% | −120−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Transamerica Financial Advisors, Inc. | 0 | $0 | 0.00% | −88−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −85−100.0% | Sold out |
| Asset Dedication, LLC | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Cape Investment Advisory, Inc. | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Signature Equity Partners, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Quattro Advisors LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Cedar Mountain Advisors, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Dunhill Financial, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |