(OPTT) Stock Institutional Trading Activity


(OPTT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Renaissance Technologies LLCBuy348,548485,617$244,605
Q2 2025Renaissance Technologies LLCBuy100,869137,069$65,094
Q4 2022Renaissance Technologies LLCSell-355,21836,200$16
Q2 2021Renaissance Technologies LLCBuy303,387391,418$979
Q3 2020Renaissance Technologies LLCSell-34,54888,031$89
Q2 2020Renaissance Technologies LLCSell-60,278122,579$86
Q1 2020Renaissance Technologies LLCBuy137,256182,857$67
Q3 2019Renaissance Technologies LLCSell-41,12145,601$82
Q2 2019Renaissance Technologies LLCBuy86,72286,722$166

Frequently asked questions about OPTT activity

  • Which institutional owners are buying OPTT?

    Institutional owners buying OPTT 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 OPTT activity?

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

  • Is institutional interest in OPTT increasing?

    Institutional interest in OPTT 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.