MONOLITHIC POWER SYSTEMS INC (MPWR) Stock Ownership and Short Interest
USA - NASDAQ:MPWR - US6098391054 - Common Stock
1086.36 USD
-18.69 (-1.69%)
1089.99 USD
+3.63 (+0.33%)
| Shares Outstanding | 47.89M |
| Float | 46.32M |
| Float Short Interest Percentage | 4.06% |
| Owners (insider) | 3.03% |
| Owners (institutional) | 101.47% |
| Owners (insider) change | -7.56% |
| Owners (institutional) change | 0.32% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Oct 24, 2025 | Tseng Saria | Open Market Sale | 1300 | 1,087.62 | $ 1,413,906.00 |
| Oct 15, 2025 | Tseng Saria | Open Market Sale | 16840 | 1,017.77 | $ 17,139,295.31 |
| Oct 1, 2025 | Blegen Theodore | Open Market Sale | 3000 | 913.22 | $ 2,739,647.60 |
| Sep 18, 2025 | Tseng Saria | Open Market Sale | 14510 | 914.45 | $ 13,268,669.50 |
| Sep 18, 2025 | Martinez Carintia | Open Market Sale | 1400 | 900.00 | $ 1,260,000.00 |
| Sep 2, 2025 | Blegen Theodore | Open Market Sale | 3000 | 814.34 | $ 2,443,032.12 |
| Aug 29, 2025 | Elmiger Eugen J | Open Market Sale | 4000 | 846.71 | $ 3,386,841.00 |
| Aug 27, 2025 | Zhou Jeff | Open Market Sale | 193 | 870.00 | $ 167,910.00 |
| Aug 19, 2025 | Sciammas Maurice | Other Disposition | 3998 | 0.00 | $ 0.00 |
| Aug 15, 2025 | Hsing Michael | Open Market Sale | 20231 | 829.10 | $ 16,773,550.18 |
| Aug 13, 2025 | Zhou Jeff | Open Market Sale | 400 | 850.00 | $ 340,000.00 |
| Aug 12, 2025 | Zhou Jeff | Open Market Sale | 200 | 830.00 | $ 166,000.00 |
| Aug 11, 2025 | Xiao Deming | Other Aquisition | 1890 | 0.00 | $ 0.00 |
| Aug 6, 2025 | Sciammas Maurice | Other Aquisition | 9672 | 0.00 | $ 0.00 |
| Aug 1, 2025 | Blegen Theodore | Open Market Sale | 3000 | 750.00 | $ 2,250,000.00 |
| Aug 1, 2025 | Xiao Deming | Open Market Sale | 39999 | 780.00 | $ 31,199,220.00 |
| Jul 1, 2025 | Blegen Theodore | Open Market Sale | 6000 | 750.00 | $ 4,500,000.00 |
| May 28, 2025 | Sciammas Maurice | Other Disposition | 2998 | 0.00 | $ 0.00 |
| May 13, 2025 | CHANG KUO WEI HERBERT | Open Market Sale | 50 | 738.00 | $ 36,900.00 |
| May 12, 2025 | Sciammas Maurice | Open Market Sale | 12000 | 701.00 | $ 8,412,000.00 |
| May 12, 2025 | CHANG KUO WEI HERBERT | Open Market Sale | 100 | 698.00 | $ 69,800.00 |
| May 8, 2025 | CHANG KUO WEI HERBERT | Open Market Sale | 100 | 650.00 | $ 65,000.00 |
| Feb 18, 2025 | Sciammas Maurice | Other Disposition | 2204 | 0.00 | $ 0.00 |
| Feb 18, 2025 | Hsing Michael | Open Market Sale | 5200 | 700.00 | $ 3,640,000.00 |
| Feb 11, 2025 | Sciammas Maurice | Other Disposition | 10100 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Sciammas Maurice | Open Market Sale | 662 | 717.10 | $ 474,720.60 |
| Feb 10, 2025 | Hsing Michael | Open Market Sale | 2594 | 717.10 | $ 1,860,157.40 |
| Feb 10, 2025 | Blegen Theodore | Open Market Sale | 532 | 717.10 | $ 381,497.57 |
| Feb 10, 2025 | Xiao Deming | Open Market Sale | 662 | 717.10 | $ 474,720.60 |
| Feb 10, 2025 | Tseng Saria | Open Market Sale | 663 | 717.10 | $ 475,437.57 |
| Feb 7, 2025 | Hsing Michael | Open Market Sale | 11964 | 700.00 | $ 8,374,800.00 |
| Feb 7, 2025 | Sciammas Maurice | Open Market Sale | 7000 | 701.98 | $ 4,913,851.67 |
| Feb 4, 2025 | Lee Victor K | Grant | 335 | 0.00 | $ 0.00 |
| Feb 4, 2025 | Elmiger Eugen J | Grant | 335 | 0.00 | $ 0.00 |
| Feb 4, 2025 | CHANG KUO WEI HERBERT | Grant | 335 | 0.00 | $ 0.00 |
| Feb 4, 2025 | Martinez Carintia | Grant | 335 | 0.00 | $ 0.00 |
| Feb 4, 2025 | Zhou Jeff | Grant | 335 | 0.00 | $ 0.00 |
| Feb 4, 2025 | Wynne Eileen | Grant | 335 | 0.00 | $ 0.00 |
| Jan 24, 2025 | Hsing Michael | Open Market Sale | 3636 | 700.00 | $ 2,545,200.00 |
| Dec 9, 2024 | Blegen Theodore | Open Market Sale | 2500 | 600.00 | $ 1,500,000.00 |
| Nov 8, 2024 | Xiao Deming | Open Market Sale | 866 | 765.14 | $ 662,611.24 |
| Nov 8, 2024 | Tseng Saria | Open Market Sale | 866 | 765.14 | $ 662,611.24 |
| Nov 8, 2024 | Sciammas Maurice | Open Market Sale | 866 | 765.14 | $ 662,611.24 |
| Nov 8, 2024 | Hsing Michael | Open Market Sale | 2812 | 765.15 | $ 2,151,601.80 |
| Nov 8, 2024 | Blegen Theodore | Open Market Sale | 734 | 765.15 | $ 561,620.10 |
| Nov 1, 2024 | Blegen Theodore | Open Market Sale | 2500 | 772.96 | $ 1,932,404.67 |