MPWR MONOLITHIC POWER SYSTEMS, INC.: institutional ownership and insider trading
1,322 funds reported holding $72.9B of MONOLITHIC POWER SYSTEMS, INC. in their latest 13F filings; in Q2 2026 funds net bought $2.52B, with 203 new positions and 83 funds selling out; over the last 12 months insiders bought $0 and sold $728M on the open market.
Famous investors holding MPWR
- Dan Sundheim (D1 Capital Partners): $118M, 0.3% of the portfolio
- Two Sigma (Two Sigma Investments): $271M, 0.2% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $87.2M, 0.1% of the portfolio
- Izzy Englander (Millennium Management): $240M, 0.1% of the portfolio
- Ken Griffin (Citadel Advisors): $305M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $40.1M, 0.0% of the portfolio
- Ray Dalio (Bridgewater Associates): $4.28M, 0.0% of the portfolio
- Lee Ainslie (Maverick Capital): $820K, 0.0% of the portfolio
Largest institutional holders of MPWR
- BlackRock, Inc. (BLK) — $7.73B
- FMR LLC — $7.16B
- VANGUARD GROUP INC — $5.47B
- VANGUARD CAPITAL MANAGEMENT LLC — $4.32B
- VANGUARD PORTFOLIO MANAGEMENT LLC — $3.46B
- Invesco Ltd. (IVZ) — $3.24B
- STATE STREET CORP (STT, STT-PG) — $3.16B
- GEODE CAPITAL MANAGEMENT, LLC — $1.65B
- PRICE T ROWE ASSOCIATES INC /MD/ — $1.35B
- FRANKLIN RESOURCES INC (BEN) — $1.12B
Recent MPWR insider trades
- Sep 28, 2026: Hsing Michael sold 30,000 shares ($40.3M)
- Aug 24, 2026: Dean Robert W Ii sold 32 shares ($41.5K)
- Aug 24, 2026: Chang Kuo Wei Herbert sold 50 shares ($64.1K)
- Aug 17, 2026: Dean Robert W Ii sold 6 shares ($8.48K)
Members of Congress trading MPWR
- Jun 5, 2026: Byron Donalds sold part of $1.00K–$15.0K
- Jun 5, 2026: Byron Donalds sold part of $1.00K–$15.0K
- Oct 20, 2025: Michael Guest bought $1.00K–$15.0K
- Apr 8, 2025: Robert P. Bresnahan, Jr. bought $1.00K–$15.0K
- Jan 13, 2025: Robert P. Bresnahan, Jr. sold $1.00K–$15.0K
5%+ owners
- FMR LLC: 10.5% (Schedule 13G/A, filed Jul 8, 2026)
- Vanguard Capital Management: 7.3% (Schedule 13G, filed Apr 30, 2026)
- Vanguard Portfolio Management: 5.1% (Schedule 13G, filed Apr 29, 2026)