Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
Fund holders13F

Funds That Own MONOLITHIC POWER SYSTEMS, INC. (MPWR)

2 of the 26 major funds we track reported MPWR in their latest 13F, worth $91.5M combined at quarter end.

FundManagerQuarterSharesValue% of portfolioChangeFiled
Renaissance TechnologiesJim Simons (founder)Q2 202663,066$87.2M0.12%▲ NewAug 13, 2026 ↗
Bridgewater AssociatesRay Dalio (founder)Q2 20263,096$4.28M0.02%▼ −74.1%Aug 14, 2026 ↗
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

A 13F lists long positions in U.S.-listed stocks and some options at quarter end. It does not show short positions, cash, most foreign holdings, or trades made since. What a 13F can't tell you →