STRO (STRO) Institutional Ownership Changes & 13F Activity

STRO. 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.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Renaissance Technologies LLCBuy511,6001,424,797$1,237,294
Q2 2025Renaissance Technologies LLCBuy44,200913,197$651,931
Q1 2025Renaissance Technologies LLCSell-146,214868,997$565,369
Q4 2024Renaissance Technologies LLCBuy187,1141,015,211$1,867,988
Q3 2024Renaissance Technologies LLCBuy108,600828,097$2,865,216
Q2 2024Renaissance Technologies LLCBuy233,700719,497$2,108,126
Q1 2024Renaissance Technologies LLCSell-170,000485,797$2,745
Q4 2023Renaissance Technologies LLCBuy352,900655,797$2,813
Q3 2023Renaissance Technologies LLCBuy33,400302,897$1,051
Q2 2023Renaissance Technologies LLCBuy140,100269,497$1,253
Q1 2023Renaissance Technologies LLCBuy99,497129,397$598
Q4 2022Renaissance Technologies LLCSell-186,00029,900$242
Q3 2022Renaissance Technologies LLCBuy68,200215,900$1,198
Q2 2022Renaissance Technologies LLCBuy99,000147,700$770
Q4 2021Renaissance Technologies LLCBuy18,68648,700$725
Q4 2020Renaissance Technologies LLCSell-119,49930,014$652
Q2 2020Renaissance Technologies LLCBuy139,213149,513$1,160
Q4 2019Renaissance Technologies LLCBuy10,30010,300$113

Frequently asked questions about STRO activity

  • Which institutional owners are buying STRO?

    Institutional owners buying STRO 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 STRO activity?

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

  • Is institutional interest in STRO increasing?

    Institutional interest in STRO 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.

Related STRO Institutional Insights