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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.

Institutional holdersQ1 2026: 380 institutions
Q1 2021: 193 institutionsQ2 2021: 189 institutionsQ3 2021: 205 institutionsQ4 2021: 254 institutionsQ1 2022: 290 institutionsQ2 2022: 277 institutionsQ3 2022: 287 institutionsQ4 2022: 327 institutionsQ1 2023: 379 institutionsQ2 2023: 406 institutionsQ3 2023: 421 institutionsQ4 2023: 421 institutionsQ1 2024: 385 institutionsQ2 2024: 393 institutionsQ3 2024: 369 institutionsQ4 2024: 325 institutionsQ1 2025: 307 institutionsQ2 2025: 330 institutionsQ3 2025: 362 institutionsQ4 2025: 373 institutionsQ1 2026: 380 institutionsQ2 2026: 442 institutions
Value heldQ1 2026: $3.03B
Q1 2021: $1.20BQ2 2021: $1.17BQ3 2021: $1.37BQ4 2021: $2.05BQ1 2022: $2.05BQ2 2022: $1.52BQ3 2022: $1.72BQ4 2022: $2.31BQ1 2023: $3.86BQ2 2023: $5.41BQ3 2023: $4.85BQ4 2023: $3.81BQ1 2024: $3.37BQ2 2024: $4.35BQ3 2024: $3.17BQ4 2024: $2.16BQ1 2025: $1.54BQ2 2025: $2.20BQ3 2025: $2.96BQ4 2025: $2.52BQ1 2026: $3.03BQ2 2026: $5.85B
Institutions holding ACLS and their total value by quarter
QuarterHoldersValue
Q2 2026442$5.85B
Q1 2026380$3.03B
Q4 2025373$2.52B
Q3 2025362$2.96B
Q2 2025330$2.20B
Q1 2025307$1.54B
Q4 2024325$2.16B
Q3 2024369$3.17B
Q2 2024393$4.35B
Q1 2024385$3.37B
Q4 2023421$3.81B
Q3 2023421$4.85B
Q2 2023406$5.41B
Q1 2023379$3.86B
Q4 2022327$2.31B
Q3 2022287$1.72B
Q2 2022277$1.52B
Q1 2022290$2.05B
Q4 2021254$2.05B
Q3 2021205$1.37B
Q2 2021189$1.17B
Q1 2021193$1.20B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Axcelis Technologies Inc; share changes are against Q4 2025.

Institutions holding ACLS in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
US Bancorp487$45.3K0.00%−20−3.9%Reduced
Ancora Advisors, LLC500$46.5K0.00%00.0%Unchanged
Smartleaf Asset Management LLC519$46.9K0.00%−644−55.4%Reduced
Massmutual Trust Co FSB512$47.7K0.00%+28+5.8%Added
Advisory Services Network, LLC569$53.0K0.00%+569New
Advisors Asset Management, Inc.656$61.1K0.00%−446−40.5%Reduced
Parallel Advisors, LLC665$61.9K0.00%+120+22.0%Added
Salem Investment Counselors Inc685$63.8K0.00%+685New
Larson Financial Group LLC737$68.6K0.00%−196−21.0%Reduced
Quadrant Capital Group LLC766$71.3K0.00%−196−20.4%Reduced
Allworth Financial LP791$73.6K0.00%+29+3.8%Added
Rockefeller Capital Management L.P.888$82.7K0.00%−469−34.6%Reduced
Hantz Financial Services, Inc.887$83.0K0.00%−626−41.4%Reduced
Sterling Capital Management LLC969$90.2K0.00%−702−42.0%Reduced
Parkside Financial Bank & Trust1,001$93.2K0.01%−65−6.1%Reduced
Signaturefd, LLC1,020$94.9K0.00%+4+0.4%Added
KBC Group NV1,069$100.0K0.00%00.0%Unchanged
Versant Capital Management, Inc1,077$100.2K0.01%+58+5.7%Added
Ameriflex Group, Inc.1,180$109.8K0.06%00.0%Unchanged
Central Trust Co1,237$115.1K0.00%−113−8.4%Reduced
New Age Alpha Advisors, LLC1,293$120.4K0.01%−29−2.2%Reduced
SBI Securities Co., Ltd.1,363$126.9K0.00%−234−14.7%Reduced
Northwestern Mutual Wealth Management Co1,396$129.9K0.00%+43+3.2%Added
Covestor Ltd1,468$137.0K0.09%−809−35.5%Reduced
Farther Finance Advisors, LLC1,490$142.3K0.00%−268−15.2%Reduced
Ensign Peak Advisors, Inc1,966$183.0K0.00%00.0%Unchanged
Huntington National Bank2,060$191.7K0.00%+2,000+3,333.3%Added
denkapparat Operations GmbH2,168$201.8K0.08%+2,168New
The PNC Financial Services Group, Inc.2,168$201.8K0.00%−114−5.0%Reduced
Swiss Life Asset Management Ltd2,174$202.4K0.00%+2,174New
TRB Wealth Management, LLC2,176$202.5K0.03%+2,176New
Virtus ETF Advisers LLC2,221$206.7K0.10%00.0%Unchanged
Point72 Asset Management, L.P.2,250$209.4K0.00%+2,250New
D.A. Davidson & Co.2,300$214.1K0.00%−337−12.8%Reduced
Stratos Wealth Partners, LTD.2,321$216.0K0.00%+2,321New
Beacon Pointe Advisors, LLC2,321$216.0K0.00%+2,321New
Crossmark Global Holdings, Inc.2,330$216.9K0.00%+2,330New
Darden Wealth Group Inc2,385$222.0K0.11%+2,385New
Integrated Wealth Concepts LLC2,407$224.0K0.00%+2,407New
NorthCrest Asset Manangement, LLC2,365$224.9K0.01%−4−0.2%Reduced
Baird Financial Group, Inc.2,421$225.3K0.00%+2,421New
CWM, LLC2,473$230.2K0.00%−150−5.7%Reduced
Cresset Asset Management, LLC2,482$231.0K0.00%+2,482New
STRS Ohio2,500$232.7K0.00%−900−26.5%Reduced
Ameritas Investment Partners, Inc.2,521$234.7K0.01%00.0%Unchanged
Vise Technologies, Inc.2,937$236.0K0.00%00.0%Unchanged
Nisa Investment Advisors, LLC2,538$236.2K0.00%+106+4.4%Added
Callan Family Office, LLC2,548$237.2K0.01%+26+1.0%Added
Raymond James Financial Inc2,550$237.4K0.00%−11,772−82.2%Reduced
Toroso Investments, LLC2,584$240.5K0.00%−795−23.5%Reduced
Cornerstone Investment Partners, LLC2,605$242.5K0.01%+2,605New
Abel Hall, LLC2,617$243.6K0.05%−12−0.5%Reduced
Commonwealth Equity Services, LLC2,633$245.1K0.00%−265−9.1%Reduced
Glenmede Trust Co NA2,640$245.7K0.00%+30+1.1%Added
Exchange Traded Concepts, LLC2,719$253.1K0.00%+2,719New
Tower Research Capital LLC (TRC)2,734$254.5K0.01%+1,802+193.3%Added
Perkins Coie Trust Co2,749$255.9K0.05%00.0%Unchanged
Mirabella Financial Services LLP2,753$256.2K0.02%+2,753New
Everence Capital Management Inc2,766$257.0K0.02%−2,114−43.3%Reduced
AE Wealth Management LLC2,767$257.6K0.00%−527−16.0%Reduced
Pinnacle Wealth Planning Services, Inc.2,874$267.5K0.03%+1,864+184.6%Added
GAMMA Investing LLC2,925$272.3K0.01%+16+0.6%Added
One Wealth Advisors, LLC2,926$272.4K0.03%+244+9.1%Added
Xponance, Inc.2,940$273.7K0.00%+396+15.6%Added
Neuberger Berman Group LLC2,944$274.0K0.00%+229+8.4%Added
Private Advisor Group, LLC2,978$277.2K0.00%−35,504−92.3%Reduced
Net Worth Advisory Group3,028$281.9K0.06%−996−24.8%Reduced
Kerr Financial Planning Corp2,150$283.6K0.35%−275−11.3%Reduced
Wealth Enhancement Advisory Services, LLC5,467$294.9K0.00%+1,754+47.2%Added
Jones Financial Companies LLLP3,040$295.9K0.00%+2,751+951.9%Added
EntryPoint Capital, LLC3,213$299.1K0.09%+3,213New
Cerity Partners LLC3,263$303.7K0.00%−1,789−35.4%Reduced
Essex Investment Management Co LLC3,350$311.8K0.05%00.0%Unchanged
Edgestream Partners, L.P.3,362$312.9K0.01%+3,362New
SG Americas Securities, LLC3,375$314.0K0.00%−10,791−76.2%Reduced
James Investment Research Inc3,408$317.2K0.04%−4,873−58.8%Reduced
Skandinaviska Enskilda Banken AB (publ)3,430$319.5K0.01%+3,430New
Public Employees Retirement Association of Colorado3,457$322.0K0.00%00.0%Unchanged
Mutual of America Capital Management LLC3,513$327.0K0.00%−30−0.8%Reduced
Wealth Effects LLC3,571$332.4K0.12%−76−2.1%Reduced
Numerai GP LLC3,638$338.6K0.03%+3,638New
Advisor Group Holdings, Inc.3,696$344.0K0.00%+1,040+39.2%Added
Brevan Howard Capital Management LP3,784$352.2K0.00%−894−19.1%Reduced
Catalyst Funds Management Pty Ltd3,800$353.7K0.06%+3,800New
Atria Investments LLC3,906$363.6K0.00%+3,906New
Linden Thomas Advisory Services, LLC3,933$366.1K0.04%+57+1.5%Added
Firsthand Capital Management, Inc.4,000$372.3K0.79%00.0%Unchanged
Bank of Montreal4,025$374.6K0.00%+755+23.1%Added
Alpine Global Management, LLC4,044$376.4K0.06%+4,044New
Leavell Investment Management, Inc.4,121$383.6K0.02%+730+21.5%Added
Moors & Cabot, Inc.4,200$390.9K0.02%−3,230−43.5%Reduced
Lido Advisors, LLC4,259$396.5K0.00%+648+17.9%Added
Vestcor Inc4,286$399.0K0.01%−5,785−57.4%Reduced
Citadel Advisors LLC4,505$419.3K0.00%−171,542−97.4%Reduced
Maryland State Retirement & Pension System4,517$420.4K0.01%00.0%Unchanged
Pictet Asset Management Holding SA4,881$454.3K0.00%+581+13.5%Added
Corient IA LLC5,000$465.4K0.44%+5,000New
Federation des caisses Desjardins du Quebec5,021$467.4K0.00%−325−6.1%Reduced
DRW Securities, LLC5,052$470.2K0.03%+5,052New
O'Shaughnessy Asset Management, LLC5,086$473.4K0.00%−720−12.4%Reduced