BLOK (BLOK) Institutional Ownership Changes & 13F Activity

BLOK. 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 Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-13,40016,400$932,996
Q3 2025Renaissance Technologies LLCBuy8,30029,800$1,997,792
Q2 2025Renaissance Technologies LLCBuy16,00021,500$1,227,865
Q4 2024Renaissance Technologies LLCBuy5,5005,500$237,545
Q2 2021Sequoia Financial AdvisorsSell-1,4877,639$364
Q1 2021Sequoia Financial AdvisorsBuy9,1269,126$510

Frequently asked questions about BLOK activity

  • Which institutional owners are buying BLOK?

    Institutional owners buying BLOK 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 BLOK activity?

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

  • Is institutional interest in BLOK increasing?

    Institutional interest in BLOK 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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