ARK INNOVATION ETF (ARKK) Stock Institutional Trading Activity


ARK INNOVATION ETF (ARKK) 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, ARK Invest, Sequoia Financial Advisors, Appaloosa Management, and Matrix Private Capital Group. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Sequoia Financial AdvisorsSell-4,6683,684$317,902
Q3 2025Renaissance Technologies LLCSell-68,40026,500$2,286,950
Q3 2025ARK InvestBuy5,72316,471$1,421,450
Q2 2025ARK InvestSell-72,18410,748$755,450
Q1 2025Renaissance Technologies LLCBuy89,30094,900$4,515,342
Q1 2025ARK InvestBuy49,60282,932$3,945,922
Q4 2024ARK InvestBuy11,71033,330$1,892,123
Q3 2024ARK InvestSell-33,13921,620$1,027,614
Q2 2024Renaissance Technologies LLCSell-56,4005,600$246,120
Q1 2024ARK InvestBuy26,73254,759$2,742,349
Q4 2023ARK InvestBuy17,05528,027$1,467,768
Q3 2023ARK InvestSell-7210,972$435,256
Q2 2023Renaissance Technologies LLCSell-19,00062,000$2,737
Q2 2023ARK InvestSell-2,51211,044$487,472
Q1 2023Renaissance Technologies LLCBuy71,30081,000$3,268
Q1 2023Appaloosa ManagementBuy500,000500,000$20,170,000
Q1 2023ARK InvestSell-87,43913,556$546,849
Q4 2022Renaissance Technologies LLCSell-10,7009,700$303
Q4 2022ARK InvestBuy91,502100,995$3,155,084
Q3 2022Matrix Private Capital GroupSell-2,6322,246$85
Q3 2022Sequoia Financial AdvisorsSell-1,9638,352$315
Q3 2022ARK InvestSell-48,8649,493$358
Q2 2022Matrix Private Capital GroupSell-3,2244,878$195
Q2 2022Sequoia Financial AdvisorsSell-4,08710,315$411
Q2 2022ARK InvestBuy8,87258,357$2,573
Q1 2022Matrix Private Capital GroupSell-3458,102$537
Q1 2022Sequoia Financial AdvisorsSell-2,17914,402$955
Q1 2022ARK InvestSell-109,50749,485$3,280
Q4 2021Matrix Private Capital GroupSell-1,8908,447$799
Q4 2021Sequoia Financial AdvisorsBuy12,41116,581$1,568

Frequently asked questions about ARKK activity

  • Which institutional owners are buying ARKK?

    Institutional owners buying ARKK 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 ARKK activity?

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

  • Is institutional interest in ARKK increasing?

    Institutional interest in ARKK 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.