CARIBOU BIOSCIENCES INC (CRBU) Institutional Ownership Changes & 13F Activity

CARIBOU BIOSCIENCES INC (CRBU). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC and ARK Invest.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy950,6402,590,497$4,921,944
Q4 2025Renaissance Technologies LLCBuy859,4361,639,857$2,607,373
Q3 2025Renaissance Technologies LLCBuy248,300780,421$1,818,381
Q2 2025Renaissance Technologies LLCSell-62,079532,121$670,472
Q3 2024Renaissance Technologies LLCSell-888,700594,200$1,164,632
Q2 2024Renaissance Technologies LLCBuy1,450,5001,482,900$2,431,956
Q4 2023Renaissance Technologies LLCSell-45,30032,400$186
Q1 2023Renaissance Technologies LLCSell-161,30077,700$413
Q2 2022Renaissance Technologies LLCBuy93,900239,000$1,298
Q1 2022Renaissance Technologies LLCBuy49,151145,100$1,332
Q4 2021Renaissance Technologies LLCBuy95,94995,949$1,448
Q3 2021ARK InvestBuy4,9034,903$117

Frequently asked questions about CRBU activity

  • Which institutional owners are buying CRBU?

    Institutional owners buying CRBU 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 CRBU activity?

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

  • Is institutional interest in CRBU increasing?

    Institutional interest in CRBU 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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