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MPWRNasdaq · Semiconductors & Related Devices

MONOLITHIC POWER SYSTEMS, INC.

Alert me on MPWR
0
Insider buys, 6 months
3
Congress trades, 6 months
0
Signals, 6 months

Six months

MPWR stock chart by TradingView

After each filing

67
Oct 1 Sale Hsing Michael Insider
1 week
+0.6%S&P +1.3%
1 month
Result in5 trading days
3 months
Result in47 trading days
6 months
Result in110 trading days
Aug 27 Sale DEAN ROBERT W II Insider
1 week
−7.4%S&P +0.3%
1 month
+3.1%S&P −0.5%
3 months
Result in23 trading days
6 months
Result in86 trading days
Aug 26 Sale CHANG KUO WEI HERBERT Insider
1 week
−6.5%S&P −0.1%
1 month
+4.9%S&P +0.9%
3 months
Result in22 trading days
6 months
Result in85 trading days
Aug 20 Sale DEAN ROBERT W II Insider
1 week
0.0%S&P +1.1%
1 month
−2.5%S&P +1.7%
3 months
Result in18 trading days
6 months
Result in81 trading days
Aug 14 Sale CHANG KUO WEI HERBERT Insider
1 week
−6.1%S&P −1.4%
1 month
−18.5%S&P −2.4%
3 months
Result in14 trading days
6 months
Result in77 trading days
Show all 67
Aug 7 Sale DEAN ROBERT W II Insider
1 week
0.0%S&P +0.4%
1 month
−13.1%S&P −0.9%
3 months
Result in9 trading days
6 months
Result in72 trading days
Aug 6 Sale Sciammas Maurice Insider
1 week
+0.3%S&P +1.2%
1 month
−9.9%S&P +0.2%
3 months
Result in8 trading days
6 months
Result in71 trading days
Aug 5 Sale Sen. Thomas H Tuberville Senate
1 week
+0.3%S&P +1.2%
1 month
−9.9%S&P +0.2%
3 months
Result in8 trading days
6 months
Result in71 trading days
Jul 18 Sale Sciammas Maurice Insider
1 week
+0.8%S&P −0.4%
1 month
+0.3%S&P +3.4%
3 months
−8.7%S&P +3.1%
6 months
Result in58 trading days
Jul 15 Sale Rep. Byron Donalds House
1 week
+7.0%S&P −1.7%
1 month
+7.4%S&P +3.4%
3 months
−4.6%S&P +2.8%
6 months
Result in56 trading days
Jul 7 Sale Sciammas Maurice Insider
1 week
+8.1%S&P +0.6%
1 month
+5.7%S&P +3.0%
3 months
+16.4%S&P +3.9%
6 months
Result in49 trading days
Jun 4 Sale Sciammas Maurice Insider
1 week
−3.8%S&P −2.6%
1 month
−22.9%S&P −1.0%
3 months
−26.5%S&P +2.4%
6 months
Result in28 trading days
May 30 Sale Tseng Saria Insider
1 week
+1.1%S&P −2.5%
1 month
−13.5%S&P −1.4%
3 months
−17.7%S&P +1.4%
6 months
Result in25 trading days
May 29 Sale DEAN ROBERT W II Insider
1 week
−5.4%S&P −2.5%
1 month
−11.6%S&P −1.0%
3 months
−19.7%S&P +2.0%
6 months
Result in24 trading days
May 28 Sale Zhou Jeff Insider
1 week
+1.2%S&P +0.3%
1 month
−19.6%S&P −1.6%
3 months
−19.6%S&P +2.4%
6 months
Result in23 trading days
May 28 Sale Tseng Saria Insider
1 week
+1.2%S&P +0.3%
1 month
−19.6%S&P −1.6%
3 months
−19.6%S&P +2.4%
6 months
Result in23 trading days
May 21 Sale DEAN ROBERT W II Insider
1 week
+0.3%S&P +1.9%
1 month
−8.8%S&P −1.0%
3 months
−15.6%S&P +3.4%
6 months
Result in19 trading days
May 21 Sale Hsing Michael Insider
1 week
+0.3%S&P +1.9%
1 month
−8.8%S&P −1.0%
3 months
−15.6%S&P +3.4%
6 months
Result in19 trading days
May 20 Sale Sciammas Maurice Insider
1 week
+5.1%S&P +1.8%
1 month
−1.0%S&P +0.7%
3 months
−15.5%S&P +3.1%
6 months
Result in18 trading days
May 9 Sale Elmiger Eugen J Insider
1 week
−10.5%S&P −0.1%
1 month
−11.3%S&P −1.9%
3 months
−15.5%S&P +4.5%
6 months
Result in11 trading days
May 9 Sale Xiao Deming Insider
1 week
−10.5%S&P −0.1%
1 month
−11.3%S&P −1.9%
3 months
−15.5%S&P +4.5%
6 months
Result in11 trading days
May 8 Sale Wynne Eileen Insider
1 week
−3.2%S&P +0.2%
1 month
−4.3%S&P −0.1%
3 months
−13.6%S&P +5.1%
6 months
Result in10 trading days
May 7 Sale Zhou Jeff Insider
1 week
+2.4%S&P +2.3%
1 month
−1.1%S&P +1.0%
3 months
−10.9%S&P +6.0%
6 months
Result in9 trading days
May 6 Sale Sciammas Maurice Insider
1 week
−0.1%S&P +1.2%
1 month
−10.4%S&P +0.5%
3 months
−17.6%S&P +5.0%
6 months
Result in8 trading days
May 6 Sale Sciammas Maurice Insider
1 week
−0.1%S&P +1.2%
1 month
−10.4%S&P +0.5%
3 months
−17.6%S&P +5.0%
6 months
Result in8 trading days
Apr 10 Sale Tseng Saria Insider
1 week
+8.5%S&P +4.5%
1 month
+22.7%S&P +8.8%
3 months
−4.5%S&P +10.5%
6 months
+2.7%S&P +15.2%
Apr 8 Sale Tseng Saria Insider
1 week
+3.1%S&P +3.5%
1 month
+20.0%S&P +8.2%
3 months
+4.8%S&P +11.5%
6 months
+8.9%S&P +15.6%
Apr 4 Sale Tseng Saria Insider
1 week
+16.3%S&P +4.1%
1 month
+34.6%S&P +9.8%
3 months
+8.0%S&P +13.8%
6 months
+25.8%S&P +18.2%
Apr 3 Sale Sciammas Maurice Insider
1 week
+16.3%S&P +4.1%
1 month
+34.6%S&P +9.8%
3 months
+8.0%S&P +13.8%
6 months
+25.8%S&P +18.2%
Apr 2 Sale Tseng Saria Insider
1 week
+21.0%S&P +3.6%
1 month
+40.7%S&P +9.5%
3 months
+20.5%S&P +14.8%
6 months
+29.1%S&P +17.9%
Mar 25 Sale Sciammas Maurice Insider
1 week
+0.3%S&P −0.2%
1 month
+46.2%S&P +8.7%
3 months
+28.8%S&P +12.1%
6 months
+19.8%S&P +17.4%
Feb 18 Sale Hsing Michael Insider
1 week
+3.7%S&P +1.0%
1 month
−8.0%S&P −3.9%
3 months
+23.8%S&P +7.2%
6 months
+9.8%S&P +12.7%
Feb 14 Sale Hsing Michael Insider
1 week
+3.5%S&P +0.7%
1 month
−8.3%S&P −3.1%
3 months
+26.9%S&P +8.5%
6 months
+14.0%S&P +13.0%
Feb 13 Sale Sciammas Maurice Insider
1 week
+1.6%S&P +0.1%
1 month
−8.9%S&P −1.6%
3 months
+32.6%S&P +8.7%
6 months
+21.3%S&P +13.9%
Feb 12 Sale Hsing Michael Insider
1 week
+4.2%S&P +1.2%
1 month
−6.8%S&P −1.8%
3 months
+39.9%S&P +10.1%
6 months
+21.7%S&P +14.6%
Feb 12 Sale Lee Victor K Insider
1 week
+4.2%S&P +1.2%
1 month
−6.8%S&P −1.8%
3 months
+39.9%S&P +10.1%
6 months
+21.7%S&P +14.6%
Feb 11 Sale BLEGEN THEODORE Insider
1 week
−1.8%S&P −1.1%
1 month
−12.0%S&P −4.3%
3 months
+38.2%S&P +7.6%
6 months
+14.2%S&P +13.0%
Feb 11 Sale Hsing Michael Insider
1 week
−1.8%S&P −1.1%
1 month
−12.0%S&P −4.3%
3 months
+38.2%S&P +7.6%
6 months
+14.2%S&P +13.0%
Feb 11 Sale Xiao Deming Insider
1 week
−1.8%S&P −1.1%
1 month
−12.0%S&P −4.3%
3 months
+38.2%S&P +7.6%
6 months
+14.2%S&P +13.0%
Feb 11 Sale Sciammas Maurice Insider
1 week
−1.8%S&P −1.1%
1 month
−12.0%S&P −4.3%
3 months
+38.2%S&P +7.6%
6 months
+14.2%S&P +13.0%
Feb 11 Sale Tseng Saria Insider
1 week
−1.8%S&P −1.1%
1 month
−12.0%S&P −4.3%
3 months
+38.2%S&P +7.6%
6 months
+14.2%S&P +13.0%
Feb 4 Sale BLEGEN THEODORE Insider
1 week
+5.3%S&P +0.8%
1 month
−10.0%S&P −2.0%
3 months
+45.6%S&P +7.2%
6 months
+19.9%S&P +12.6%
Jan 7 Sale BLEGEN THEODORE Insider
1 week
+2.6%S&P +0.1%
1 month
+28.2%S&P +0.2%
3 months
+39.4%S&P −1.1%
6 months
+41.5%S&P +10.1%
Jan 7 Sale Lee Victor K Insider
1 week
+2.6%S&P +0.1%
1 month
+28.2%S&P +0.2%
3 months
+39.4%S&P −1.1%
6 months
+41.5%S&P +10.1%
Dec 29, 2025 Sale Lee Victor K Insider
1 week
+8.3%S&P +0.6%
1 month
+27.4%S&P +0.9%
3 months
+18.0%S&P −5.2%
6 months
+43.9%S&P +9.0%
Dec 3, 2025 Sale BLEGEN THEODORE Insider
1 week
+2.2%S&P +0.5%
1 month
−0.1%S&P +0.9%
3 months
+7.0%S&P −1.4%
6 months
+55.1%S&P +8.5%
Nov 28, 2025 Sale Tseng Saria Insider
1 week
+3.8%S&P +0.3%
1 month
−0.5%S&P +0.8%
3 months
+16.0%S&P −0.2%
6 months
+75.7%S&P +11.8%
Nov 28, 2025 Sale Tseng Saria Insider
1 week
+3.8%S&P +0.3%
1 month
−0.5%S&P +0.8%
3 months
+16.0%S&P −0.2%
6 months
+75.7%S&P +11.8%
Nov 26, 2025 Sale CHANG KUO WEI HERBERT Insider
1 week
+3.0%S&P +0.7%
1 month
+0.6%S&P +1.5%
3 months
+23.7%S&P +1.3%
6 months
+67.3%S&P +12.2%
Nov 26, 2025 Sale Sciammas Maurice Insider
1 week
+3.0%S&P +0.7%
1 month
+0.6%S&P +1.5%
3 months
+23.7%S&P +1.3%
6 months
+67.3%S&P +12.2%
Nov 24, 2025 Sale CHANG KUO WEI HERBERT Insider
1 week
+6.6%S&P +1.9%
1 month
+6.8%S&P +3.5%
3 months
+32.4%S&P +3.4%
6 months
+83.5%S&P +13.5%
Nov 21, 2025 Sale Sciammas Maurice Insider
1 week
+6.4%S&P +3.2%
1 month
+8.2%S&P +4.7%
3 months
+41.5%S&P +5.5%
6 months
+86.4%S&P +14.5%
Nov 21, 2025 Sale Sciammas Maurice Insider
1 week
+6.4%S&P +3.2%
1 month
+8.2%S&P +4.7%
3 months
+41.5%S&P +5.5%
6 months
+86.4%S&P +14.5%
Nov 19, 2025 Buy Rep. Michael Patrick Guest House
1 week
+8.3%S&P +4.7%
1 month
+10.3%S&P +5.3%
3 months
+41.8%S&P +5.6%
6 months
+94.7%S&P +15.7%
Nov 14, 2025 Sale Hsing Michael Insider
1 week
−5.2%S&P −1.9%
1 month
+3.4%S&P +1.0%
3 months
+29.4%S&P +2.4%
6 months
+60.1%S&P +9.8%
Nov 14, 2025 Sale Hsing Michael Insider
1 week
−5.2%S&P −1.9%
1 month
+3.4%S&P +1.0%
3 months
+29.4%S&P +2.4%
6 months
+60.1%S&P +9.8%
Nov 7, 2025 Sale Sciammas Maurice Insider
1 week
−4.0%S&P +0.1%
1 month
+0.5%S&P +1.8%
3 months
+19.4%S&P +3.5%
6 months
+67.5%S&P +10.6%
Nov 5, 2025 Sale BLEGEN THEODORE Insider
1 week
−4.2%S&P +0.9%
1 month
−3.7%S&P +1.2%
3 months
+23.2%S&P +2.2%
6 months
+60.6%S&P +9.5%
Oct 25, 2025 Sale Tseng Saria Insider
1 week
−9.2%S&P −0.3%
1 month
−17.8%S&P −1.5%
3 months
+5.3%S&P +1.8%
6 months
+38.7%S&P +4.4%
Oct 17, 2025 Sale Tseng Saria Insider
1 week
+7.0%S&P +1.9%
1 month
−10.7%S&P +0.2%
3 months
+3.1%S&P +2.3%
6 months
+52.6%S&P +6.6%
Oct 2, 2025 Sale BLEGEN THEODORE Insider
1 week
+5.2%S&P +0.3%
1 month
+8.0%S&P +1.9%
3 months
+0.8%S&P +2.4%
6 months
+27.3%S&P −1.0%
Sep 23, 2025 Sale Martinez Carintia Insider
1 week
+0.9%S&P +0.4%
1 month
+9.7%S&P +0.7%
3 months
+3.6%S&P +3.6%
6 months
+22.8%S&P −0.4%
Sep 23, 2025 Sale Tseng Saria Insider
1 week
+0.9%S&P +0.4%
1 month
+9.7%S&P +0.7%
3 months
+3.6%S&P +3.6%
6 months
+22.8%S&P −0.4%
Sep 4, 2025 Sale BLEGEN THEODORE Insider
1 week
−0.9%S&P +1.3%
1 month
+8.5%S&P +3.4%
3 months
+13.2%S&P +5.6%
6 months
+21.1%S&P +4.2%
Sep 3, 2025 Sale Elmiger Eugen J Insider
1 week
+3.3%S&P +1.3%
1 month
+12.6%S&P +4.2%
3 months
+15.3%S&P +6.2%
6 months
+30.8%S&P +6.4%
May 8, 2025 Buy Rep. Rob Bresnahan House
1 week
+12.2%S&P +5.3%
1 month
+14.7%S&P +6.9%
3 months
+25.3%S&P +13.0%
6 months
+50.8%S&P +19.6%
Feb 13, 2025 Sale Rep. Rob Bresnahan House
1 week
−4.7%S&P −2.0%
1 month
−9.1%S&P −8.0%
3 months
+4.7%S&P −2.2%
6 months
+24.7%S&P +6.1%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for MPWR

176 held · newest 5176 held · newest 2
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See all 176 filings for MPWR

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal
No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters
No lobbying reports on file.