OEF Institutional Ownership Changes & 13F Activity

ISHARES S&P 100 ETF (OEF) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Sequoia Financial Advisors, Renaissance Technologies LLC, and Matrix Private Capital Group.

Related OEF insights

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Sequoia Financial AdvisorsSell-5052,008$638,832
Q1 2026Renaissance Technologies LLCSell-22910,851$3,451,378
Q4 2025Renaissance Technologies LLCSell-9,62011,080$3,800,108
Q3 2025Renaissance Technologies LLCBuy16,20020,700$6,889,788
Q3 2025Sequoia Financial AdvisorsSell-3462,513$836,296
Q2 2025Renaissance Technologies LLCSell-8,4004,500$1,369,575
Q2 2025Sequoia Financial AdvisorsBuy2642,859$870,216
Q1 2025Sequoia Financial AdvisorsBuy2782,595$702,780
Q4 2024Renaissance Technologies LLCBuy8,90012,900$3,726,165
Q4 2024Sequoia Financial AdvisorsBuy8522,317$669,143
Q3 2024Renaissance Technologies LLCSell-9,6004,000$1,107,040
Q2 2024Renaissance Technologies LLCBuy9,40013,600$3,594,480
Q2 2024Sequoia Financial AdvisorsBuy2651,465$387,183
Q1 2024Renaissance Technologies LLCSell-15,3004,200$1,039
Q1 2024Sequoia Financial AdvisorsBuy11,200$296,784
Q4 2023Renaissance Technologies LLCBuy9,80019,500$4,356
Q4 2023Sequoia Financial AdvisorsBuy11,199$267,865
Q3 2023Renaissance Technologies LLCSell-3,0009,700$1,946
Q2 2023Renaissance Technologies LLCBuy11,40012,700$2,630
Q1 2023Renaissance Technologies LLCSell-2,4001,300$243
Q1 2023Sequoia Financial AdvisorsSell-2211,198$223,999
Q4 2022Sequoia Financial AdvisorsBuy1,4191,419$242,046
Q3 2022Renaissance Technologies LLCSell-4,4003,700$601
Q4 2021Renaissance Technologies LLCSell-2,3008,100$1,775
Q3 2021Renaissance Technologies LLCBuy8,20010,400$2,053
Q2 2021Renaissance Technologies LLCSell-1002,200$432
Q1 2021Matrix Private Capital GroupBuy324324$58
Q3 2020Renaissance Technologies LLCBuy3002,300$358
Q2 2020Renaissance Technologies LLCSell-6,8002,000$285
Q4 2019Renaissance Technologies LLCBuy8,8008,800$1,268

Frequently asked questions about OEF activity

  • Which institutional owners are buying OEF?

    Institutional owners buying OEF 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 OEF activity?

    "Buy" means an investor increased their reported position in OEF compared to the prior reporting period. This reflects growing exposure to ISHARES S&P 100 ETF (OEF) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in OEF increasing?

    Institutional interest in OEF 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.