APPLIED OPTOELECTRONICS INC (AAOI) Institutional Ownership Changes & 13F Activity

APPLIED OPTOELECTRONICS INC (AAOI). 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 Polen Capital Management.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy205,400565,279$47,816,951
Q1 2026Polen Capital ManagementBuy14,91314,913$1,261,491
Q1 2025Renaissance Technologies LLCBuy333,479359,879$5,524,143
Q4 2023Renaissance Technologies LLCSell-841,17926,400$510
Q3 2023Renaissance Technologies LLCBuy587,479867,579$9,517
Q2 2023Renaissance Technologies LLCBuy68,100280,100$1,669
Q1 2023Renaissance Technologies LLCBuy17,800212,000$469
Q4 2022Renaissance Technologies LLCSell-10,700194,200$367
Q3 2022Renaissance Technologies LLCSell-103,379204,900$557
Q2 2022Renaissance Technologies LLCBuy266,979308,279$478
Q1 2022Renaissance Technologies LLCSell-28,88341,300$151
Q4 2021Renaissance Technologies LLCSell-337,01770,183$361
Q1 2021Renaissance Technologies LLCBuy157,400407,200$3,404
Q4 2020Renaissance Technologies LLCBuy171,600249,800$2,126
Q2 2020Renaissance Technologies LLCBuy15,00078,200$850
Q4 2019Renaissance Technologies LLCSell-24,20063,200$751
Q2 2019Renaissance Technologies LLCBuy22,30087,400$898
Q1 2019Renaissance Technologies LLCSell-448,90065,100$794
Q1 2017Renaissance Technologies LLCBuy339,900514,000$28,861
Q4 2016Renaissance Technologies LLCBuy109,600174,100$4,081
Q1 2016Renaissance Technologies LLCBuy23,80064,500$962
Q4 2015Renaissance Technologies LLCSell-77,00040,700$698
Q3 2015Renaissance Technologies LLCBuy117,700117,700$2,210

Frequently asked questions about AAOI activity

  • Which institutional owners are buying AAOI?

    Institutional owners buying AAOI 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 AAOI activity?

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

  • Is institutional interest in AAOI increasing?

    Institutional interest in AAOI 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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