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, 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
- +11 vs. Q4 2025
- Shares held
- 32.6M
- +5.38M (+19.8%) vs. Q4 2025
- Total value
- $3.03B
- +$843.1M (+38.5%) vs. Q4 2025
- New holders
- 70
- 100 more added
- Sold out
- 59
- 134 more reduced
4 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 | 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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,936,774 | $459.5M | 0.01% | +109,199+2.3% | Added |
| Vanguard Portfolio Management LLC | 2,488,293 | $231.6M | 0.01% | +2,488,293 | New |
| FMR LLC | 2,431,121 | $226.3M | 0.01% | +1,820,518+298.2% | Added |
| Reinhart Partners, Inc. | 1,657,745 | $154.3M | 4.44% | +67,847+4.3% | Added |
| Vanguard Capital Management LLC | 1,382,770 | $128.7M | 0.00% | +1,382,770 | New |
| Balyasny Asset Management LLC | 1,364,540 | $127.0M | 0.25% | +1,121,037+460.4% | Added |
| Victory Capital Management Inc | 1,279,005 | $119.0M | 0.08% | −528,399−29.2% | Reduced |
| State Street Corp | 1,189,045 | $110.7M | 0.00% | +2,818+0.2% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,006,028 | $93.6M | 0.11% | −85,066−7.8% | Reduced |
| American Century Companies Inc | 951,914 | $88.6M | 0.05% | −281,732−22.8% | Reduced |
| Dimensional Fund Advisors LP | 844,097 | $78.6M | 0.02% | +3,057+0.4% | Added |
| Geode Capital Management, LLC | 811,264 | $75.5M | 0.00% | −106,483−11.6% | Reduced |
| Primecap Management Co | 658,652 | $61.3M | 0.05% | −6,290−0.9% | Reduced |
| Morgan Stanley | 581,636 | $54.1M | 0.00% | +231,416+66.1% | Added |
| D. E. Shaw & Co., Inc. | 544,421 | $50.7M | 0.04% | +74,136+15.8% | Added |
| Goldman Sachs Group Inc | 497,624 | $46.3M | 0.01% | −132,190−21.0% | Reduced |
| Manufacturers Life Insurance Company, The | 491,745 | $45.8M | 0.04% | +477,705+3,402.5% | Added |
| Charles Schwab Investment Management Inc | 445,769 | $41.5M | 0.01% | +14,574+3.4% | Added |
| LSV Asset Management | 429,500 | $40.0M | 0.09% | 00.0% | Unchanged |
| Northern Trust Corp | 416,703 | $38.8M | 0.01% | +11,557+2.9% | Added |
| Boston Trust Walden Corp | 378,525 | $35.2M | 0.29% | −49,211−11.5% | Reduced |
| UBS Group AG | 377,237 | $35.1M | 0.01% | +163,849+76.8% | Added |
| Price T Rowe Associates Inc | 362,202 | $33.7M | 0.00% | −20,854−5.4% | Reduced |
| Boston Partners | 340,275 | $31.8M | 0.03% | −82,160−19.4% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 334,786 | $31.2M | 0.08% | +11,937+3.7% | Added |
| Allspring Global Investments Holdings, LLC | 258,536 | $24.7M | 0.04% | −7,479−2.8% | Reduced |
| JPMorgan Chase & Co | 222,714 | $20.1M | 0.00% | −134,788−37.7% | Reduced |
| Principal Financial Group Inc | 210,202 | $19.6M | 0.01% | +10,177+5.1% | Added |
| Federated Hermes, Inc. | 209,198 | $19.5M | 0.03% | −67,068−24.3% | Reduced |
| Vanguard Fiduciary Trust Co | 200,465 | $18.7M | 0.00% | +200,465 | New |
| Segall Bryant & Hamill, LLC | 200,371 | $18.7M | 0.27% | +98,184+96.1% | Added |
| Bank of New York Mellon Corp | 199,672 | $18.6M | 0.00% | −3,864−1.9% | Reduced |
| Two Sigma Investments, LP | 197,566 | $18.4M | 0.02% | +126,322+177.3% | Added |
| Kennedy Capital Management, Inc. | 178,016 | $16.6M | 0.35% | −27,721−13.5% | Reduced |
| Invesco Ltd. | 165,075 | $15.4M | 0.00% | −313,822−65.5% | Reduced |
| BNP Paribas Arbitrage, SA | 144,678 | $13.5M | 0.01% | −19,349−11.8% | Reduced |
| First Trust Advisors LP | 137,779 | $12.8M | 0.01% | +49,383+55.9% | Added |
| Royce & Associates LP | 125,280 | $11.7M | 0.12% | +8,905+7.7% | Added |
| Bank of America Corp | 110,999 | $10.3M | 0.00% | −7,207−6.1% | Reduced |
| Public Sector Pension Investment Board | 109,791 | $10.2M | 0.03% | −19,986−15.4% | Reduced |
| First Eagle Investment Management, LLC | 100,551 | $9.36M | 0.02% | −35,767−26.2% | Reduced |
| Emerald Advisers, LLC | 96,238 | $8.96M | 0.28% | +96,238 | New |
| Rhumbline Advisers | 87,307 | $8.13M | 0.01% | −802−0.9% | Reduced |
| Sagefield Capital LP | 82,238 | $7.65M | 0.55% | +82,238 | New |
| Ameriprise Financial Inc | 78,695 | $7.32M | 0.00% | −7,362−8.6% | Reduced |
| Creative Planning | 77,712 | $7.23M | 0.00% | +4,212+5.7% | Added |
| Portolan Capital Management, LLC | 77,168 | $7.18M | 0.38% | +77,168 | New |
| Legal & General Group Plc | 71,909 | $6.69M | 0.00% | −6,146−7.9% | Reduced |
| Nuveen, LLC | 71,385 | $6.64M | 0.00% | +992+1.4% | Added |
| Susquehanna Portfolio Strategies, LLC | 68,213 | $6.35M | 0.09% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 64,550 | $6.01M | 0.00% | +3,453+5.7% | Added |
| Swiss National Bank | 61,200 | $5.70M | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 51,701 | $4.81M | 0.00% | −28,051−35.2% | Reduced |
| Holocene Advisors, LP | 51,575 | $4.80M | 0.01% | +35,896+228.9% | Added |
| QSM Asset Management Ltd | 51,571 | $4.63M | 2.27% | −1,595−3.0% | Reduced |
| Mercer Global Advisors Inc | 47,976 | $4.47M | 0.01% | +44,255+1,189.3% | Added |
| Great Lakes Advisors, LLC | 47,594 | $4.43M | 0.04% | +47,594 | New |
| Emerald Mutual Fund Advisers Trust | 47,412 | $4.41M | 0.21% | +47,412 | New |
| SEI Investments Co | 45,035 | $4.19M | 0.00% | +17,059+61.0% | Added |
| Globeflex Capital L P | 44,455 | $4.14M | 0.63% | −11,542−20.6% | Reduced |
| Voloridge Investment Management, LLC | 44,246 | $4.12M | 0.02% | −176,467−80.0% | Reduced |
| Needham Investment Management LLC | 42,500 | $3.96M | 0.20% | +22,500+112.5% | Added |
| Old West Investment Management, LLC | 42,481 | $3.95M | 0.43% | +24,417+135.2% | Added |
| Harbor Capital Advisors, Inc. | 41,831 | $3.89M | 0.32% | −2,856−6.4% | Reduced |
| ARGA Investment Management, LP | 41,408 | $3.85M | 0.13% | +22,874+123.4% | Added |
| State of Wisconsin Investment Board | 41,207 | $3.84M | 0.01% | −9,299−18.4% | Reduced |
| Ossiam | 40,700 | $3.79M | 0.07% | 00.0% | Unchanged |
| Amundi | 40,627 | $3.78M | 0.00% | +3,353+9.0% | Added |
| Allianz Asset Management GmbH | 40,133 | $3.74M | 0.00% | +40,133 | New |
| AQR Capital Management LLC | 40,015 | $3.72M | 0.00% | +2,434+6.5% | Added |
| Emerald Investment Advisers, LLC | 39,764 | $3.70M | 0.33% | +39,764 | New |
| Isthmus Partners, LLC | 39,357 | $3.66M | 0.38% | −2,123−5.1% | Reduced |
| Empowered Funds, LLC | 39,087 | $3.64M | 0.02% | +39,087 | New |
| Bridges Investment Management Inc | 38,637 | $3.60M | 0.05% | +10,237+36.0% | Added |
| Bessemer Group Inc | 38,001 | $3.54M | 0.01% | +29+0.1% | Added |
| California State Teachers Retirement System | 36,420 | $3.39M | 0.00% | +6,390+21.3% | Added |
| Alberta Investment Management Corp | 35,750 | $3.33M | 0.02% | +35,750 | New |
| Barclays PLC | 35,371 | $3.29M | 0.00% | −40,611−53.4% | Reduced |
| Voleon Capital Management LP | 35,221 | $3.28M | 0.07% | +35,221 | New |
| Toronto Dominion Bank | 34,008 | $3.17M | 0.01% | +34,008 | New |
| Squarepoint Ops LLC | 33,291 | $3.10M | 0.01% | −120,412−78.3% | Reduced |
| Envestnet Asset Management Inc | 31,781 | $2.96M | 0.00% | −20,716−39.5% | Reduced |
| Prudential Financial Inc | 31,377 | $2.92M | 0.00% | −8,188−20.7% | Reduced |
| Alliancebernstein L.P. | 34,489 | $2.77M | 0.00% | +243+0.7% | Added |
| Inspire Advisors, LLC | 29,411 | $2.74M | 0.22% | +29,411 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 29,121 | $2.71M | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 28,859 | $2.69M | 0.00% | +2,939+11.3% | Added |
| Vanguard Asset Management, Ltd | 27,199 | $2.53M | 0.00% | +27,199 | New |
| Franklin Resources Inc | 26,719 | $2.49M | 0.00% | −6,529−19.6% | Reduced |
| Great West Life Assurance Co | 25,154 | $2.34M | 0.00% | −1,148−4.4% | Reduced |
| Abn Amro Investment Solutions | 24,650 | $2.29M | 0.03% | −148−0.6% | Reduced |
| Citigroup Inc | 24,645 | $2.29M | 0.00% | −85,825−77.7% | Reduced |
| Paradigm Capital Management Inc | 24,000 | $2.23M | 0.09% | −32,000−57.1% | Reduced |
| Yakira Capital Management, Inc. | 22,619 | $2.11M | 0.62% | +22,619 | New |
| Stifel Financial Corp | 22,584 | $2.10M | 0.00% | −1,763−7.2% | Reduced |
| LPL Financial LLC | 22,497 | $2.09M | 0.00% | −12,077−34.9% | Reduced |
| Janney Montgomery Scott LLC | 22,150 | $2.06M | 0.01% | −286−1.3% | Reduced |
| State of Alaska, Department of Revenue | 21,979 | $2.04M | 0.02% | −589−2.6% | Reduced |
| Hussman Strategic Advisors, Inc. | 21,000 | $1.95M | 0.42% | +21,000 | New |
| Thrivent Financial for Lutherans | 20,491 | $1.91M | 0.00% | −810−3.8% | Reduced |