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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 2021

Institutional positions in Axcelis Technologies Inc as of Mar 31, 2021. 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
193
No complete 13F data for Q4 2020
Shares held
29.2M
No complete 13F data for Q4 2020
Total value
$1.20B
No complete 13F data for Q4 2020

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 2021: 193 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 2021: $1.20B
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 2021

Shares, value and share of portfolio for each institution holding Axcelis Technologies Inc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding ACLS in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
UBS Asset Management Americas Inc25,323$1.04M0.00%––
Morse Asset Management, Inc25,400$1.04M0.27%––
Commonwealth of Pennsylvania Public School Empls Retrmt Sys26,014$1.07M0.01%––
Virginia Retirement Systems Et Al26,200$1.08M0.01%––
DCM Advisors, LLC28,040$1.15M0.67%––
Winton Group Ltd28,516$1.17M0.07%––
State of Tennessee, Treasury Department28,556$1.17M0.00%––
Algert Global LLC28,770$1.18M0.38%––
Great West Life Assurance Co29,298$1.20M0.00%––
New York State Common Retirement Fund31,875$1.31M0.00%––
Jacobs Levy Equity Management, Inc32,321$1.33M0.01%––
Tudor Investment Corp Et Al35,085$1.44M0.03%––
Voya Investment Management LLC35,455$1.46M0.00%––
Comerica Bank34,077$1.50M0.01%––
Ensign Peak Advisors, Inc36,700$1.51M0.00%––
Credit Suisse AG38,278$1.57M0.00%––
CSM Advisors, LLC38,380$1.58M0.22%––
Martingale Asset Management L P40,254$1.66M0.02%––
Alliancebernstein L.P.41,785$1.72M0.00%––
EAM Investors, LLC44,120$1.81M0.27%––
California State Teachers Retirement System50,196$2.06M0.00%––
Barclays PLC50,288$2.07M0.00%––
Teachers Retirement System of the State of Kentucky50,614$2.08M0.02%––
Glaxis Capital Management, LLC51,480$2.12M2.29%––
Victory Capital Management Inc51,965$2.13M0.00%––
Employees Retirement System of Texas52,558$2.16M0.03%––
Susquehanna International Group, LLP53,727$2.21M0.00%––
State Board of Administration of Florida Retirement System54,882$2.25M0.00%––
Cubist Systematic Strategies, LLC56,861$2.34M0.03%––
Globeflex Capital L P61,986$2.55M0.46%––
EAM Global Investors LLC62,152$2.55M0.71%––
State of New Jersey Common Pension Fund D62,322$2.56M0.01%––
Citadel Advisors LLC62,761$2.58M0.00%––
Millrace Asset Group, Inc.65,157$2.68M1.44%––
Penbrook Management LLC65,800$2.70M1.95%––
Norges Bank67,536$2.77M0.00%––
California Public Employees Retirement System67,700$2.78M0.00%––
Walthausen & Co., LLC68,130$2.80M0.59%––
Mackay Shields LLC68,500$2.81M0.02%––
Public Sector Pension Investment Board69,064$2.84M0.02%––
First Trust Advisors LP70,395$2.89M0.00%––
Bank of America Corp70,721$2.90M0.00%––
Bank Julius Baer & Co. Ltd, Zurich71,978$2.96M0.02%––
Oberweis Asset Management Inc72,380$2.97M0.61%––
Panagora Asset Management Inc75,741$3.11M0.02%––
AQR Capital Management LLC76,145$3.13M0.01%––
Swiss National Bank76,600$3.15M0.00%––
Los Angeles Capital Management LLC76,650$3.15M0.01%––
State of Wisconsin Investment Board78,000$3.21M0.01%––
Parametric Portfolio Associates LLC81,160$3.33M0.00%––
Wells Fargo & Company90,132$3.70M0.00%––
Assenagon Asset Management S.A.91,741$3.77M0.02%––
Acadian Asset Management LLC96,390$3.96M0.02%––
Legal & General Group Plc97,251$4.00M0.00%––
Rhumbline Advisers99,127$4.07M0.01%––
Prudential Financial Inc103,051$4.23M0.01%––
Paradigm Capital Management Inc104,000$4.27M0.22%––
GW&K Investment Management, LLC114,765$4.72M0.04%––
Boston Partners128,867$5.29M0.01%––
UBS Group AG134,127$5.51M0.00%––
JPMorgan Chase & Co135,829$5.58M0.00%––
Nuveen Asset Management, LLC147,391$6.06M0.00%––
Ameriprise Financial Inc150,642$6.19M0.00%––
Invesco Ltd.165,791$6.81M0.00%––
Morgan Stanley169,532$6.97M0.00%––
Two Sigma Advisers, LP187,700$7.71M0.02%––
Kennedy Capital Management, Inc.193,751$7.96M0.16%––
Renaissance Technologies LLC195,699$8.04M0.01%––
Federated Hermes, Inc.219,659$9.03M0.02%––
S Squared Technology, LLC221,293$9.09M4.30%––
Rice Hall James & Associates, LLC223,258$9.17M0.30%––
Millennium Management LLC229,780$9.44M0.01%––
Principal Financial Group Inc238,691$9.81M0.01%––
Charles Schwab Investment Management Inc249,328$10.2M0.00%––
Monarch Partners Asset Management LLC254,863$10.5M1.58%––
Pier Capital, LLC313,984$12.9M1.22%––
Bank of New York Mellon Corp361,924$14.9M0.00%––
Arrowstreet Capital, Limited Partnership390,092$16.0M0.02%––
Northern Trust Corp426,648$17.5M0.00%––
Manufacturers Life Insurance Company, The526,886$21.6M0.02%––
Geode Capital Management, LLC548,013$22.5M0.00%––
Thrivent Financial for Lutherans560,077$23.0M0.05%––
Goldman Sachs Group Inc578,290$23.8M0.01%––
Driehaus Capital Management LLC755,453$31.0M0.46%––
Senvest Management, LLC981,279$40.3M1.27%––
Royce & Associates LP1,007,476$41.4M0.28%––
State Street Corp1,027,042$42.2M0.00%––
Russell Investments Group, Ltd.1,167,636$48.0M0.08%––
Wellington Management Group LLP1,468,198$60.3M0.01%––
Dimensional Fund Advisors LP1,640,218$67.4M0.02%––
Primecap Management Co2,334,800$95.9M0.07%––
Vanguard Group Inc2,508,432$103.1M0.00%––
BlackRock Inc.5,268,589$216.5M0.01%––