MPWR: Monolithic Pwr Sys Inc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 8 sales totaling $40.35M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-09-28 | Hsing Michael | CEO | $789K | yes |
| 2026-09-28 | Hsing Michael | CEO | $2.82M | yes |
| 2026-09-28 | Hsing Michael | CEO | $1.48M | yes |
| 2026-09-28 | Hsing Michael | CEO | $3.95M | yes |
| 2026-09-28 | Hsing Michael | CEO | $7.77M | yes |
| 2026-09-28 | Hsing Michael | CEO | $8.54M | yes |
| 2026-09-28 | Hsing Michael | CEO | $14.82M | yes |
| 2026-09-28 | Hsing Michael | CEO | $176K | yes |
Institutional ownership (Q2 2026)
1,254 institutions reported holding $62.89B of Monolithic Pwr Sys Inc on Form 13F (1,124 the quarter before). 209 opened a new position and 79 sold out. Shares held by institutions: +1%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 5,589,925 | $7.73B |
| FMR LLC | 5,177,258 | $7.16B |
| VANGUARD CAPITAL MANAGEMENT LLC | 3,126,756 | $4.32B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2,504,858 | $3.46B |
| Invesco Ltd. | 2,343,930 | $3.24B |
| STATE STREET CORP | 2,282,186 | $3.16B |
| GEODE CAPITAL MANAGEMENT, LLC | 1,195,281 | $1.65B |
| FRANKLIN RESOURCES INC | 811,974 | $1.12B |
| GOLDMAN SACHS GROUP INC | 780,650 | $1.08B |
| NORGES BANK | 751,399 | $1.04B |
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