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 |
|---|---|---|---|---|---|
| Toronto Dominion Bank | 34,008 | $3.17M | 0.01% | +34,008 | New |
| Voleon Capital Management LP | 35,221 | $3.28M | 0.07% | +35,221 | New |
| Barclays PLC | 35,371 | $3.29M | 0.00% | −40,611−53.4% | Reduced |
| Alberta Investment Management Corp | 35,750 | $3.33M | 0.02% | +35,750 | New |
| California State Teachers Retirement System | 36,420 | $3.39M | 0.00% | +6,390+21.3% | Added |
| Bessemer Group Inc | 38,001 | $3.54M | 0.01% | +29+0.1% | Added |
| Bridges Investment Management Inc | 38,637 | $3.60M | 0.05% | +10,237+36.0% | Added |
| Empowered Funds, LLC | 39,087 | $3.64M | 0.02% | +39,087 | New |
| Isthmus Partners, LLC | 39,357 | $3.66M | 0.38% | −2,123−5.1% | Reduced |
| Emerald Investment Advisers, LLC | 39,764 | $3.70M | 0.33% | +39,764 | New |
| AQR Capital Management LLC | 40,015 | $3.72M | 0.00% | +2,434+6.5% | Added |
| Allianz Asset Management GmbH | 40,133 | $3.74M | 0.00% | +40,133 | New |
| Amundi | 40,627 | $3.78M | 0.00% | +3,353+9.0% | Added |
| Ossiam | 40,700 | $3.79M | 0.07% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 41,207 | $3.84M | 0.01% | −9,299−18.4% | Reduced |
| ARGA Investment Management, LP | 41,408 | $3.85M | 0.13% | +22,874+123.4% | Added |
| Harbor Capital Advisors, Inc. | 41,831 | $3.89M | 0.32% | −2,856−6.4% | Reduced |
| Old West Investment Management, LLC | 42,481 | $3.95M | 0.43% | +24,417+135.2% | Added |
| Needham Investment Management LLC | 42,500 | $3.96M | 0.20% | +22,500+112.5% | Added |
| Voloridge Investment Management, LLC | 44,246 | $4.12M | 0.02% | −176,467−80.0% | Reduced |
| Globeflex Capital L P | 44,455 | $4.14M | 0.63% | −11,542−20.6% | Reduced |
| SEI Investments Co | 45,035 | $4.19M | 0.00% | +17,059+61.0% | Added |
| Emerald Mutual Fund Advisers Trust | 47,412 | $4.41M | 0.21% | +47,412 | New |
| Great Lakes Advisors, LLC | 47,594 | $4.43M | 0.04% | +47,594 | New |
| Mercer Global Advisors Inc | 47,976 | $4.47M | 0.01% | +44,255+1,189.3% | Added |
| QSM Asset Management Ltd | 51,571 | $4.63M | 2.27% | −1,595−3.0% | Reduced |
| Holocene Advisors, LP | 51,575 | $4.80M | 0.01% | +35,896+228.9% | Added |
| Wells Fargo & Company | 51,701 | $4.81M | 0.00% | −28,051−35.2% | Reduced |
| Swiss National Bank | 61,200 | $5.70M | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 64,550 | $6.01M | 0.00% | +3,453+5.7% | Added |
| Susquehanna Portfolio Strategies, LLC | 68,213 | $6.35M | 0.09% | 00.0% | Unchanged |
| Nuveen, LLC | 71,385 | $6.64M | 0.00% | +992+1.4% | Added |
| Legal & General Group Plc | 71,909 | $6.69M | 0.00% | −6,146−7.9% | Reduced |
| Portolan Capital Management, LLC | 77,168 | $7.18M | 0.38% | +77,168 | New |
| Creative Planning | 77,712 | $7.23M | 0.00% | +4,212+5.7% | Added |
| Ameriprise Financial Inc | 78,695 | $7.32M | 0.00% | −7,362−8.6% | Reduced |
| Sagefield Capital LP | 82,238 | $7.65M | 0.55% | +82,238 | New |
| Rhumbline Advisers | 87,307 | $8.13M | 0.01% | −802−0.9% | Reduced |
| Emerald Advisers, LLC | 96,238 | $8.96M | 0.28% | +96,238 | New |
| First Eagle Investment Management, LLC | 100,551 | $9.36M | 0.02% | −35,767−26.2% | Reduced |
| Public Sector Pension Investment Board | 109,791 | $10.2M | 0.03% | −19,986−15.4% | Reduced |
| Bank of America Corp | 110,999 | $10.3M | 0.00% | −7,207−6.1% | Reduced |
| Royce & Associates LP | 125,280 | $11.7M | 0.12% | +8,905+7.7% | Added |
| First Trust Advisors LP | 137,779 | $12.8M | 0.01% | +49,383+55.9% | Added |
| BNP Paribas Arbitrage, SA | 144,678 | $13.5M | 0.01% | −19,349−11.8% | Reduced |
| Invesco Ltd. | 165,075 | $15.4M | 0.00% | −313,822−65.5% | Reduced |
| Kennedy Capital Management, Inc. | 178,016 | $16.6M | 0.35% | −27,721−13.5% | Reduced |
| Two Sigma Investments, LP | 197,566 | $18.4M | 0.02% | +126,322+177.3% | Added |
| Bank of New York Mellon Corp | 199,672 | $18.6M | 0.00% | −3,864−1.9% | Reduced |
| Segall Bryant & Hamill, LLC | 200,371 | $18.7M | 0.27% | +98,184+96.1% | Added |
| Vanguard Fiduciary Trust Co | 200,465 | $18.7M | 0.00% | +200,465 | New |
| Federated Hermes, Inc. | 209,198 | $19.5M | 0.03% | −67,068−24.3% | Reduced |
| Principal Financial Group Inc | 210,202 | $19.6M | 0.01% | +10,177+5.1% | Added |
| JPMorgan Chase & Co | 222,714 | $20.1M | 0.00% | −134,788−37.7% | Reduced |
| Allspring Global Investments Holdings, LLC | 258,536 | $24.7M | 0.04% | −7,479−2.8% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 334,786 | $31.2M | 0.08% | +11,937+3.7% | Added |
| Boston Partners | 340,275 | $31.8M | 0.03% | −82,160−19.4% | Reduced |
| Price T Rowe Associates Inc | 362,202 | $33.7M | 0.00% | −20,854−5.4% | Reduced |
| UBS Group AG | 377,237 | $35.1M | 0.01% | +163,849+76.8% | Added |
| Boston Trust Walden Corp | 378,525 | $35.2M | 0.29% | −49,211−11.5% | Reduced |
| Northern Trust Corp | 416,703 | $38.8M | 0.01% | +11,557+2.9% | Added |
| LSV Asset Management | 429,500 | $40.0M | 0.09% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 445,769 | $41.5M | 0.01% | +14,574+3.4% | Added |
| Manufacturers Life Insurance Company, The | 491,745 | $45.8M | 0.04% | +477,705+3,402.5% | Added |
| Goldman Sachs Group Inc | 497,624 | $46.3M | 0.01% | −132,190−21.0% | Reduced |
| D. E. Shaw & Co., Inc. | 544,421 | $50.7M | 0.04% | +74,136+15.8% | Added |
| Morgan Stanley | 581,636 | $54.1M | 0.00% | +231,416+66.1% | Added |
| Primecap Management Co | 658,652 | $61.3M | 0.05% | −6,290−0.9% | Reduced |
| Geode Capital Management, LLC | 811,264 | $75.5M | 0.00% | −106,483−11.6% | Reduced |
| Dimensional Fund Advisors LP | 844,097 | $78.6M | 0.02% | +3,057+0.4% | Added |
| American Century Companies Inc | 951,914 | $88.6M | 0.05% | −281,732−22.8% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,006,028 | $93.6M | 0.11% | −85,066−7.8% | Reduced |
| State Street Corp | 1,189,045 | $110.7M | 0.00% | +2,818+0.2% | Added |
| Victory Capital Management Inc | 1,279,005 | $119.0M | 0.08% | −528,399−29.2% | Reduced |
| Balyasny Asset Management LLC | 1,364,540 | $127.0M | 0.25% | +1,121,037+460.4% | Added |
| Vanguard Capital Management LLC | 1,382,770 | $128.7M | 0.00% | +1,382,770 | New |
| Reinhart Partners, Inc. | 1,657,745 | $154.3M | 4.44% | +67,847+4.3% | Added |
| FMR LLC | 2,431,121 | $226.3M | 0.01% | +1,820,518+298.2% | Added |
| Vanguard Portfolio Management LLC | 2,488,293 | $231.6M | 0.01% | +2,488,293 | New |
| BlackRock, Inc. | 4,936,774 | $459.5M | 0.01% | +109,199+2.3% | Added |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −212,050−100.0% | Sold out |
| Clark Capital Management Group, Inc. | 0 | $0 | 0.00% | −110,294−100.0% | Sold out |
| BlackBarn Capital Partners LP | 0 | $0 | 0.00% | −96,573−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −88,080−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −79,049−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −66,899−100.0% | Sold out |
| Soviero Asset Management, LP | 0 | $0 | 0.00% | −46,000−100.0% | Sold out |
| F/M Investments LLC | 0 | $0 | 0.00% | −40,294−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −36,000−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −26,367−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −25,340−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −22,642−100.0% | Sold out |
| Elo Mutual Pension Insurance Co | 0 | $0 | 0.00% | −22,446−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −22,054−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −21,177−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −20,741−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −19,470−100.0% | Sold out |
| Mizuho Markets Cayman LP | 0 | $0 | 0.00% | −18,816−100.0% | Sold out |
| Wakefield Asset Management LLLP | 0 | $0 | 0.00% | −18,133−100.0% | Sold out |
| Oliver Luxxe Assets LLC | 0 | $0 | 0.00% | −18,063−100.0% | Sold out |