MONOLITHIC POWER SYSTEMS INC (MPWR) Institutional Ownership and Insiders Activity

MONOLITHIC POWER SYSTEMS INC (MPWR) is widely held by institutional investors, with 3 tracked firms reporting positions valued at approximately $33.31M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Parnassus Endeavor Fund is the largest disclosed holder, reporting approximately $24.28M in MPWR holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Parnassus Endeavor Fund representing the majority of disclosed value.

Recent insider activity includes 43 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.