MONOLITHIC POWER SYSTEMS INC (MPWR) Institutional Ownership Changes & 13F Activity

MONOLITHIC POWER SYSTEMS INC (MPWR). 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 Parnassus Endeavor Fund, Torray Fund, Sequoia Financial Advisors, Renaissance Technologies LLC, and Matrix Private Capital Group.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Parnassus Endeavor FundSell-8,41818,172$19,868,356
Q1 2026Torray FundSell-5423,707$4,053,048
Q1 2026Sequoia Financial AdvisorsBuy1712,859$3,125,825
Q4 2025Parnassus Endeavor FundSell-82126,590$24,100,112
Q4 2025Torray FundBuy2924,249$3,851,124
Q4 2025Sequoia Financial AdvisorsBuy2782,688$2,436,202
Q3 2025Renaissance Technologies LLCBuy7,4008,086$7,444,295
Q3 2025Torray FundBuy9033,957$3,642,972
Q3 2025Parnassus Endeavor FundSell-30127,411$25,235,663
Q3 2025Sequoia Financial AdvisorsBuy222,410$2,218,917
Q2 2025Parnassus Endeavor FundSell-73827,712$20,268,003
Q2 2025Sequoia Financial AdvisorsBuy3752,388$1,746,851
Q2 2025Torray FundBuy23,054$2,233,635
Q1 2025Sequoia Financial AdvisorsBuy3782,013$1,167,684
Q1 2025Torray FundSell-763,052$1,770,099
Q4 2024Parnassus Endeavor FundBuy5,64428,450$16,833,865
Q4 2024Sequoia Financial AdvisorsBuy8011,635$967,323
Q4 2024Torray FundSell-2633,128$1,850,838
Q3 2024Parnassus Endeavor FundSell-7,85722,806$21,084,147
Q3 2024Sequoia Financial AdvisorsBuy231834$771,289
Q3 2024Torray FundBuy593,391$3,134,980
Q3 2024Matrix Private Capital GroupSell-36218$201,814
Q2 2024Renaissance Technologies LLCSell-19,400686$563,672
Q2 2024Torray FundBuy2,1723,332$2,737,838
Q2 2024Polen Capital ManagementSell-1,4502,442$2,006,543
Q2 2024Sequoia Financial AdvisorsBuy225603$495,700
Q2 2024Matrix Private Capital GroupSell-160254$209,024
Q1 2024Renaissance Technologies LLCSell-168,30020,086$13,607
Q1 2024Torray FundSell-2,2181,160$2,307,293
Q1 2024Sequoia Financial AdvisorsSell-1,682378$256,253

Frequently asked questions about MPWR activity

  • Which institutional owners are buying MPWR?

    Institutional owners buying MPWR 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 MPWR activity?

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

  • Is institutional interest in MPWR increasing?

    Institutional interest in MPWR 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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