Monolithic Power Systems, Inc. (MPWR) Ownership & Trading Activity

Institutional holders, insider transactions, and congressional trades for MPWR. 13F holdings as of 2026-06-30.

Top Institutional Holders

InstitutionSharesValueChange
Vaughan Nelson Investment Management,144,974$200MINCREASED
Mirae Asset Global Investments Co., Ltd97,618$135MINCREASED
Robeco Schweiz96,033$133MINCREASED
Congress Asset Management80,425$111MDECREASED
Zevenbergen Capital Investments78,604$109MDECREASED

Recent Insider Trades

InsiderTypeSharesValueDate
Robert W Dean II (Interim CFO)AWARD1,3592026-07-25
Maurice Sciammas (EVP, WW Sales & Marketing)SELL110$155K2026-07-15
Maurice Sciammas (EVP, WW Sales & Marketing)SELL117$164K2026-07-15
Maurice Sciammas (EVP, WW Sales & Marketing)SELL213$297K2026-07-15
Maurice Sciammas (EVP, WW Sales & Marketing)SELL410$567K2026-07-15

Recent Congressional Trades

MemberTypeAmountDate
Byron Donalds (Republican)SALE$1,001 - $15,0002026-06-05
Byron Donalds (Republican)SALE$1,001 - $15,0002026-06-05

Full institutional holdings, insider history, and congressional trades for Monolithic Power Systems, Inc. on SentiSense.