QUANTUM-SI INC (QSI) Institutional Ownership Changes & 13F Activity

QUANTUM-SI INC (QSI). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q3 2021). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include ARK Invest.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
ARK InvestBuy+8,650,078+213.7%12,698,381$105.90MQ3 2021Nov 12, 2021
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Frequently asked questions about QSI activity

  • Which institutional owners are buying QSI?

    Institutional owners buying QSI 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 QSI activity?

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

  • Is institutional interest in QSI increasing?

    Institutional interest in QSI 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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