ACACIA RESEARCH CORP (ACTG) Institutional Ownership Changes & 13F Activity

ACACIA RESEARCH CORP (ACTG) 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 Renaissance Technologies LLC and Ariel Appreciation Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy12,2841,407,584$6,770,479
Q4 2025Renaissance Technologies LLCSell-130,7001,395,300$5,218,422
Q3 2025Renaissance Technologies LLCSell-33,0861,526,000$4,959,500
Q2 2025Renaissance Technologies LLCSell-19,2141,559,086$5,581,528
Q1 2025Renaissance Technologies LLCSell-17,1001,578,300$5,050,560
Q4 2024Renaissance Technologies LLCSell-47,4001,595,400$6,924,036
Q3 2024Renaissance Technologies LLCBuy132,5571,642,800$7,655,448
Q2 2024Renaissance Technologies LLCBuy6,1431,510,243$7,566,317
Q1 2024Renaissance Technologies LLCSell-27,1001,504,100$8,017
Q4 2023Renaissance Technologies LLCSell-80,8001,531,200$6,002
Q3 2023Renaissance Technologies LLCSell-33,1001,612,000$5,884
Q2 2023Renaissance Technologies LLCSell-2,4121,645,100$6,844
Q1 2023Renaissance Technologies LLCBuy21,1121,647,512$6,359
Q4 2022Renaissance Technologies LLCSell-114,4001,626,400$6,847
Q3 2022Renaissance Technologies LLCSell-254,8981,740,800$7,033
Q2 2022Renaissance Technologies LLCBuy14,7981,995,698$10,058
Q1 2022Renaissance Technologies LLCSell-55,6001,980,900$8,934
Q4 2021Renaissance Technologies LLCSell-117,2002,036,500$10,447
Q3 2021Renaissance Technologies LLCSell-119,3002,153,700$14,624
Q2 2021Renaissance Technologies LLCSell-196,1002,273,000$15,365
Q1 2021Renaissance Technologies LLCSell-351,2002,469,100$16,420
Q4 2020Ariel Appreciation FundSell-1,470,611122,189$481
Q4 2020Renaissance Technologies LLCSell-165,1002,820,300$11,112
Q3 2020Ariel Appreciation FundSell-152,7341,592,800$5,527
Q3 2020Renaissance Technologies LLCSell-146,9002,985,400$10,359
Q2 2020Ariel Appreciation FundSell-469,3201,745,534$7,139
Q2 2020Renaissance Technologies LLCSell-155,4003,132,300$12,811
Q1 2020Renaissance Technologies LLCSell-102,9003,287,700$7,299
Q4 2019Ariel Appreciation FundSell-214,0892,214,854$5,892
Q4 2019Renaissance Technologies LLCSell-53,1003,390,600$9,019

Frequently asked questions about ACTG activity

  • Which institutional owners are buying ACTG?

    Institutional owners buying ACTG 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 ACTG activity?

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

  • Is institutional interest in ACTG increasing?

    Institutional interest in ACTG 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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