AXCELIS TECHNOLOGIES INC (ACLS) Institutional Ownership Changes & 13F Activity

AXCELIS TECHNOLOGIES INC (ACLS) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include First Eagle U.S. Value, Renaissance Technologies LLC, Sequoia Financial Advisors, and Donald Smith & Co..

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026First Eagle U.S. ValueSell-35,767100,551$9,359,287
Q4 2025Renaissance Technologies LLCBuy56,00066,899$5,374,666
Q4 2025First Eagle U.S. ValueBuy5,960136,318$10,951,788
Q3 2025First Eagle U.S. ValueBuy57,358130,358$12,728,155
Q2 2025Renaissance Technologies LLCSell-78,60010,899$759,551
Q2 2025First Eagle U.S. ValueBuy65,72273,000$5,087,370
Q1 2025Renaissance Technologies LLCSell-122,50089,499$4,445,415
Q4 2024Renaissance Technologies LLCBuy172,200211,999$14,812,370
Q3 2024Renaissance Technologies LLCSell-4,40039,799$4,172,925
Q3 2023Renaissance Technologies LLCBuy27,19944,199$7,207
Q3 2023First Eagle U.S. ValueSell-9207,278$1,186,678
Q3 2023Sequoia Financial AdvisorsBuy1241,316$214,574
Q2 2023First Eagle U.S. ValueSell-19,2008,198$1,502,939
Q2 2023Renaissance Technologies LLCSell-17,59917,000$3,117
Q2 2023Sequoia Financial AdvisorsBuy1,1921,192$218,530
Q1 2023First Eagle U.S. ValueSell-36,90027,398$3,650,784
Q1 2023Renaissance Technologies LLCSell-8,77334,599$4,610
Q4 2022First Eagle U.S. ValueSell-95064,298$5,102,689
Q3 2022Renaissance Technologies LLCSell-60,82743,372$2,627
Q3 2022First Eagle U.S. ValueBuy16,40365,248$3,951
Q2 2022Renaissance Technologies LLCBuy94,299104,199$5,714
Q2 2022First Eagle U.S. ValueBuy48,84548,845$2,679
Q1 2022Renaissance Technologies LLCSell-4,1999,900$748
Q4 2021Renaissance Technologies LLCSell-42,60014,099$1,051
Q3 2021Renaissance Technologies LLCSell-81,40056,699$2,667
Q2 2021Renaissance Technologies LLCSell-57,600138,099$5,582
Q1 2021Renaissance Technologies LLCBuy23,000195,699$8,041
Q4 2020Renaissance Technologies LLCSell-29,300172,699$5,029
Q3 2020Renaissance Technologies LLCBuy131,500201,999$4,444
Q2 2020Renaissance Technologies LLCSell-7,60070,499$1,963

Frequently asked questions about ACLS activity

  • Which institutional owners are buying ACLS?

    Institutional owners buying ACLS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ACLS activity?

    "Buy" means an investor increased their reported position in ACLS compared to the prior reporting period. This reflects growing exposure to AXCELIS TECHNOLOGIES INC (ACLS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ACLS increasing?

    Institutional interest in ACLS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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