PEN Institutional Ownership Changes & 13F Activity

PENUMBRA INC (PEN). 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 Sequoia Financial Advisors.

Related PEN Institutional Insights

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCSell-10,9402,160$709,279
Q1 2026Sequoia Financial AdvisorsBuy874874$286,996
Q2 2025Renaissance Technologies LLCBuy5,00013,100$3,361,853
Q4 2024Renaissance Technologies LLCSell-81,9008,100$1,923,588
Q3 2024Renaissance Technologies LLCSell-9,70090,000$17,487,900
Q2 2024Renaissance Technologies LLCBuy98,20099,700$17,943,009
Q2 2023Renaissance Technologies LLCSell-134,9001,500$516
Q3 2022Renaissance Technologies LLCSell-21,500136,400$25,861
Q2 2022Renaissance Technologies LLCBuy126,500157,900$19,662
Q1 2022Renaissance Technologies LLCBuy23,70031,400$6,975
Q3 2021Renaissance Technologies LLCSell-33,1007,700$2,052
Q2 2021Renaissance Technologies LLCBuy10,50040,800$11,182
Q2 2019Renaissance Technologies LLCBuy14,50030,300$4,848
Q4 2018Renaissance Technologies LLCSell-33,20015,800$1,931
Q3 2018Renaissance Technologies LLCSell-137,50049,000$7,335
Q3 2016Renaissance Technologies LLCBuy27,900186,500$14,172
Q2 2016Renaissance Technologies LLCBuy158,600158,600$9,437

Frequently asked questions about PEN activity

  • Which institutional owners are buying PEN?

    Institutional owners buying PEN 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 PEN activity?

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

  • Is institutional interest in PEN increasing?

    Institutional interest in PEN 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.