Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
MPWR
MONOLITHIC POWER SYSTEMS INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
MONOLITHIC POWER SYSTEMS INC (MPWR) is held by 7 tracked hedge-fund managers, a combined reported value of ~$305.31M; the largest are Philippe Laffont, Ken Griffin, Ken Griffin. This quarter: 3 added, 1 closed. 12 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Heating up
Gurus holding7
Congress trades12
Price$1577vs quarter-end+44.26%
Sectors1
This quarter's moves
Top holderPhilippe LaffontNew0
Added3
Trimmed / sold1
Value $54.23M— of portfolio49,6002026 Q1
Value $40.13M— of portfolio36,7002026 Q1
Value $11.92M— of portfolio10,9002026 Q1
Value $2.19M— of portfolio2,0002026 Q1
Value $1.64M— of portfolio1,5002026 Q1
Value $328.0K— of portfolio3002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinCALL | $54.23M | — | — |
| Ken GriffinPUT | $40.13M | — | — |
| Izzy EnglanderPUT | $11.92M | — | — |
| Izzy EnglanderCALL | $2.19M | — | — |
| Steven CohenCALL | $1.64M | — | — |
| Steven CohenPUT | $328.0K | — | — |