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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; 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 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
192
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: 192 institutions
Q1 2021: 192 institutionsQ2 2021: 188 institutionsQ3 2021: 204 institutionsQ4 2021: 254 institutionsQ1 2022: 290 institutionsQ2 2022: 277 institutionsQ3 2022: 287 institutionsQ4 2022: 328 institutionsQ1 2023: 379 institutionsQ2 2023: 406 institutionsQ3 2023: 421 institutionsQ4 2023: 421 institutionsQ1 2024: 384 institutionsQ2 2024: 392 institutionsQ3 2024: 369 institutionsQ4 2024: 325 institutionsQ1 2025: 307 institutionsQ2 2025: 330 institutionsQ3 2025: 362 institutionsQ4 2025: 373 institutionsQ1 2026: 380 institutionsQ2 2026: 441 institutions
Value heldQ1 2021: $1.20B
Q1 2021: $1.20BQ2 2021: $1.17BQ3 2021: $1.37BQ4 2021: $2.06BQ1 2022: $2.05BQ2 2022: $1.52BQ3 2022: $1.72BQ4 2022: $2.32BQ1 2023: $4.00BQ2 2023: $5.41BQ3 2023: $4.85BQ4 2023: $3.95BQ1 2024: $3.57BQ2 2024: $4.38BQ3 2024: $3.19BQ4 2024: $2.16BQ1 2025: $1.54BQ2 2025: $2.22BQ3 2025: $2.98BQ4 2025: $2.52BQ1 2026: $3.03BQ2 2026: $5.87B
Institutions holding ACLS and their total value by quarter
QuarterHoldersValue
Q2 2026441$5.87B
Q1 2026380$3.03B
Q4 2025373$2.52B
Q3 2025362$2.98B
Q2 2025330$2.22B
Q1 2025307$1.54B
Q4 2024325$2.16B
Q3 2024369$3.19B
Q2 2024392$4.38B
Q1 2024384$3.57B
Q4 2023421$3.95B
Q3 2023421$4.85B
Q2 2023406$5.41B
Q1 2023379$4.00B
Q4 2022328$2.32B
Q3 2022287$1.72B
Q2 2022277$1.52B
Q1 2022290$2.05B
Q4 2021254$2.06B
Q3 2021204$1.37B
Q2 2021188$1.17B
Q1 2021192$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
BlackRock Inc.5,268,589$216.5M0.01%––
Vanguard Group Inc2,508,432$103.1M0.00%––
Primecap Management Co2,334,800$95.9M0.07%––
Dimensional Fund Advisors LP1,640,218$67.4M0.02%––
Wellington Management Group LLP1,468,198$60.3M0.01%––
Russell Investments Group, Ltd.1,167,636$48.0M0.08%––
State Street Corp1,027,042$42.2M0.00%––
Royce & Associates LP1,007,476$41.4M0.28%––
Senvest Management, LLC981,279$40.3M1.27%––
Driehaus Capital Management LLC755,453$31.0M0.46%––
Goldman Sachs Group Inc578,290$23.8M0.01%––
Thrivent Financial for Lutherans560,077$23.0M0.05%––
Geode Capital Management, LLC548,013$22.5M0.00%––
Manufacturers Life Insurance Company, The526,886$21.6M0.02%––
Northern Trust Corp426,648$17.5M0.00%––
Arrowstreet Capital, Limited Partnership390,092$16.0M0.02%––
Bank of New York Mellon Corp361,924$14.9M0.00%––
Pier Capital, LLC313,984$12.9M1.22%––
Monarch Partners Asset Management LLC254,863$10.5M1.58%––
Charles Schwab Investment Management Inc249,328$10.2M0.00%––
Principal Financial Group Inc238,691$9.81M0.01%––
Millennium Management LLC229,780$9.44M0.01%––
Rice Hall James & Associates, LLC223,258$9.17M0.30%––
S Squared Technology, LLC221,293$9.09M4.30%––
Federated Hermes, Inc.219,659$9.03M0.02%––
Renaissance Technologies LLC195,699$8.04M0.01%––
Kennedy Capital Management, Inc.193,751$7.96M0.16%––
Two Sigma Advisers, LP187,700$7.71M0.02%––
Morgan Stanley169,532$6.97M0.00%––
Invesco Ltd.165,791$6.81M0.00%––
Ameriprise Financial Inc150,642$6.19M0.00%––
Nuveen Asset Management, LLC147,391$6.06M0.00%––
JPMorgan Chase & Co135,829$5.58M0.00%––
UBS Group AG134,127$5.51M0.00%––
Boston Partners128,867$5.29M0.01%––
GW&K Investment Management, LLC114,765$4.72M0.04%––
Paradigm Capital Management Inc104,000$4.27M0.22%––
Prudential Financial Inc103,051$4.23M0.01%––
Rhumbline Advisers99,127$4.07M0.01%––
Legal & General Group Plc97,251$4.00M0.00%––
Acadian Asset Management LLC96,390$3.96M0.02%––
Assenagon Asset Management S.A.91,741$3.77M0.02%––
Wells Fargo & Company90,132$3.70M0.00%––
Parametric Portfolio Associates LLC81,160$3.33M0.00%––
State of Wisconsin Investment Board78,000$3.21M0.01%––
Los Angeles Capital Management LLC76,650$3.15M0.01%––
Swiss National Bank76,600$3.15M0.00%––
AQR Capital Management LLC76,145$3.13M0.01%––
Panagora Asset Management Inc75,741$3.11M0.02%––
Oberweis Asset Management Inc72,380$2.97M0.61%––
Bank Julius Baer & Co. Ltd, Zurich71,978$2.96M0.02%––
Bank of America Corp70,721$2.90M0.00%––
First Trust Advisors LP70,395$2.89M0.00%––
Public Sector Pension Investment Board69,064$2.84M0.02%––
Mackay Shields LLC68,500$2.81M0.02%––
Walthausen & Co., LLC68,130$2.80M0.59%––
California Public Employees Retirement System67,700$2.78M0.00%––
Norges Bank67,536$2.77M0.00%––
Penbrook Management LLC65,800$2.70M1.95%––
Millrace Asset Group, Inc.65,157$2.68M1.44%––
Citadel Advisors LLC62,761$2.58M0.00%––
State of New Jersey Common Pension Fund D62,322$2.56M0.01%––
EAM Global Investors LLC62,152$2.55M0.71%––
Globeflex Capital L P61,986$2.55M0.46%––
Cubist Systematic Strategies, LLC56,861$2.34M0.03%––
State Board of Administration of Florida Retirement System54,882$2.25M0.00%––
Susquehanna International Group, LLP53,727$2.21M0.00%––
Employees Retirement System of Texas52,558$2.16M0.03%––
Victory Capital Management Inc51,965$2.13M0.00%––
Glaxis Capital Management, LLC51,480$2.12M2.29%––
Teachers Retirement System of the State of Kentucky50,614$2.08M0.02%––
Barclays PLC50,288$2.07M0.00%––
California State Teachers Retirement System50,196$2.06M0.00%––
EAM Investors, LLC44,120$1.81M0.27%––
Alliancebernstein L.P.41,785$1.72M0.00%––
Martingale Asset Management L P40,254$1.66M0.02%––
CSM Advisors, LLC38,380$1.58M0.22%––
Credit Suisse AG38,278$1.57M0.00%––
Ensign Peak Advisors, Inc36,700$1.51M0.00%––
Comerica Bank34,077$1.50M0.01%––
Voya Investment Management LLC35,455$1.46M0.00%––
Tudor Investment Corp Et Al35,085$1.44M0.03%––
Jacobs Levy Equity Management, Inc32,321$1.33M0.01%––
New York State Common Retirement Fund31,875$1.31M0.00%––
Great West Life Assurance Co29,298$1.20M0.00%––
Algert Global LLC28,770$1.18M0.38%––
State of Tennessee, Treasury Department28,556$1.17M0.00%––
Winton Group Ltd28,516$1.17M0.07%––
DCM Advisors, LLC28,040$1.15M0.67%––
Virginia Retirement Systems Et Al26,200$1.08M0.01%––
Commonwealth of Pennsylvania Public School Empls Retrmt Sys26,014$1.07M0.01%––
Morse Asset Management, Inc25,400$1.04M0.27%––
UBS Asset Management Americas Inc25,323$1.04M0.00%––
Texas Permanent School Fund25,201$1.04M0.01%––
Jennison Associates LLC25,089$1.03M0.00%––
Deutsche Bank AG23,527$966.0K0.00%––
State of Alaska, Department of Revenue22,793$936.0K0.01%––
PEAK6 Investments LLC22,629$930.0K0.02%––
American International Group, Inc.22,199$912.0K0.00%––
SEI Investments Co18,664$767.0K0.00%––