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CLOSED · 15:00 ET
Market Clerk
Sun Sep 6 · markets closed2 signals today321 insider buys this week · $404MCIRO short report next: Sep 15The week ahead

MPWR

MONOLITHIC POWER SYSTEMS, INC.
NASDAQ · TECHNOLOGY · SEMICONDUCTORS & RELATED DEVICES
1,223.86
+10.21 +0.84%
USD · close Sep 4
MKT CAP $60.1BP/E 74.8DIV YIELD 0.58%FCF YIELD 0.97%REV TTM $3.3B +28.7%NET INCOME $801.9M −52.0%NET CASH 52W 834.14 – 1,689.89SEC XBRL · TTM TO Invalid Date

One year, everything drawn on

251 SESSIONS · DAILY CLOSES
1,7581,4271,097766Aug 24 · Interim CFO sell $42KAug 24 · Director sell $64KJun 5 · Byron Donalds sellJun 5 · Byron Donalds sellFeb 4 · Markwayne Mullin buyJan 5 · Markwayne Mullin buyJan 5 · Markwayne Mullin buyAug 5 · 10-Q filed (Q2 2026)May 4 · 10-Q filed (Q1 2026)Feb 27 · 10-K filed (FY 2025)Feb 27 · 10-K filed (Q4 2025)Feb 27 · 10-K filed (Q3 2025)Aug 5 · 10-Q filed (Q2 2025)May 4 · 10-Q filed (Q1 2025)Feb 27 · 10-K filed (FY 2024)Feb 27 · 10-K filed (Q4 2024)Nov 5 · 10-Q filed (Q3 2024)Feb 27 · 10-K filed (FY 2023)Feb 27 · 10-K filed (Q4 2023)SEP 2025OCTJAN 2026APRJUL
Insider buyInsider sellCongress buy, above the lineCongress sell, below10-K / 10-Q filedHOVER A MARKER FOR THE FILING
THE WORK ORDER · 2026-09-06
Insiders (90d): $106K net selling
Shorts (latest report): 1.8M short · −283K last period
Every line of the math
67PASS

Congress is trading it

ALL 6
TradedMemberTypeAmount
Jun 5Byron Donalds R·FLSell$1K–$15K
Jun 5Byron Donalds R·FLSell$1K–$15K
Feb 4Markwayne Mullin ?·—Buy$15K–$50K
Jan 5Markwayne Mullin ?·—Buy$15K–$50K
Jan 5Markwayne Mullin ?·—Buy$15K–$50K
May 3Thomas H Tuberville ?·—Sell$1K–$15K

Insider activity

ALL 2
DateInsiderTypeValue
Aug 24Interim CFOSell$42K
Aug 24DirectorSell$64K
Watch MPWR. Know when insiders buy.
One email the day a filing lands. Free.