MONOLITHIC POWER SYSTEMS, INC.
MPWR- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001280452
Insider trades, last 90 days
0 buys · 8 sells
- Sold $20.65M
- Open-market purchases (P) and sales (S), counted by Form 4 filing.
13F holders, Q2 2026
1,250
- +126 vs. Q1 2026
- Total value $65.65B
Superinvestors holding MPWR
2
- At the end of Q2 2026
Price chart
Latest insider trades
View all: Latest insider tradesOpen-market purchases and sales by MPWR insiders, newest first.
| Filed (ET) | Trade date | Insider | Transaction | Shares | Avg price | Value | Shares after | Holding change | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Aug 26, 20267:22 PM ET | Aug 24, 2026 | DEAN ROBERT W IIInterim CFO | SSaleCommon Stock | −32 | $1,297.72 | −$41.53K | 7.09K | −0.4% | SEC |
| Aug 25, 20267:13 PM ET | Aug 24, 2026 | CHANG KUO WEI HERBERTDirector | SSaleCommon Stock | −50 | $1,281.57 | −$64.08K | 515 | −8.8% | SEC |
| Aug 19, 20268:44 PM ET | Aug 17, 2026 | DEAN ROBERT W IIInterim CFO | SSaleCommon Stock | −6 | $1,413.64 | −$8.48K | 7.13K | −0.1% | SEC |
| Aug 13, 20265:23 PM ET | Aug 11, 2026 | CHANG KUO WEI HERBERTDirector | SSaleCommon Stock | −50 | $1,420.00 | −$71K | 565 | −8.1% | SEC |
| Aug 6, 20266:20 PM ET | Aug 5, 2026 | DEAN ROBERT W IIInterim CFO | SSaleCommon Stock | −105 | $1,344.27 | −$141.15K | 7.13K | −1.5% | SEC |
Top 5 13F holders, Q2 2026
View all: Top 5 13F holders, Q2 2026The largest institutional positions in MPWR at the end of Q2 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 5,589,925 | $7.73B | 0.12% | −482,542−7.9% | Reduced |
| FMR LLC | 5,177,258 | $7.16B | 0.31% | +776,427+17.6% | Added |
| VANGUARD CAPITAL MANAGEMENT LLC | 3,126,756 | $4.32B | 0.09% | +43,307+1.4% | Added |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2,504,858 | $3.46B | 0.16% | −11,634−0.5% | Reduced |
| Invesco Ltd. | 2,343,930 | $3.24B | 0.26% | −172,057−6.8% | Reduced |