STAAR SURGICAL CO (STAA) Stock Institutional Trading Activity


STAAR SURGICAL CO (STAA) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 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
Q4 2025Renaissance Technologies LLCBuy5,90037,800$872,802
Q2 2025Renaissance Technologies LLCSell-33,50031,900$535,282
Q1 2025Renaissance Technologies LLCSell-72,70065,400$1,153,002
Q4 2024Renaissance Technologies LLCSell-165,800138,100$3,354,449
Q3 2024Renaissance Technologies LLCBuy235,500303,900$11,289,885
Q2 2024Renaissance Technologies LLCBuy39,60068,400$3,256,524
Q1 2024Renaissance Technologies LLCSell-125,50028,800$1,102
Q4 2023Renaissance Technologies LLCSell-12,100154,300$4,816
Q3 2023Renaissance Technologies LLCSell-128,500166,400$6,686
Q2 2023Renaissance Technologies LLCSell-1,800294,900$15,503
Q1 2023Renaissance Technologies LLCBuy276,900296,700$18,974
Q4 2022Renaissance Technologies LLCSell-27,70019,800$961
Q3 2022Renaissance Technologies LLCBuy33,00047,500$3,351
Q2 2022Renaissance Technologies LLCSell-125,50014,500$1,028
Q1 2022Renaissance Technologies LLCBuy57,200140,000$11,187
Q4 2021Renaissance Technologies LLCBuy80,10082,800$7,560
Q3 2021Renaissance Technologies LLCSell-12,2002,700$347
Q4 2019Renaissance Technologies LLCSell-176,70014,900$524
Q2 2019Renaissance Technologies LLCSell-554,300191,600$5,629
Q1 2019Renaissance Technologies LLCSell-529,900745,900$25,502
Q4 2018Renaissance Technologies LLCBuy369,8001,275,800$40,711
Q3 2018Renaissance Technologies LLCBuy513,200906,000$43,488
Q1 2018Renaissance Technologies LLCBuy74,400392,800$5,813
Q4 2017Renaissance Technologies LLCBuy48,900318,400$4,935
Q3 2017Renaissance Technologies LLCBuy82,900269,500$3,355
Q2 2017Renaissance Technologies LLCBuy42,300186,600$2,015
Q1 2017Renaissance Technologies LLCBuy22,600144,300$1,414
Q4 2016Renaissance Technologies LLCSell-6,500121,700$1,320
Q3 2016Renaissance Technologies LLCSell-34,500128,200$1,205
Q2 2016Renaissance Technologies LLCBuy12,300162,700$896

Frequently asked questions about STAA activity

  • Which institutional owners are buying STAA?

    Institutional owners buying STAA 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 STAA activity?

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

  • Is institutional interest in STAA increasing?

    Institutional interest in STAA 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.