Watch MPWR. Know when insiders buy.
One email the day a filing lands. Free.
MPWR
MONOLITHIC POWER SYSTEMS, INC.
1,283.32
+34.58 +2.77%
USD · close Oct 21
A free account adds a watchlist, alerts when insiders, Congress or short sellers move on your tickers, and a morning brief. Sign up
Work order
28
FLAG · insiders 25, shorts 30
Insiders, 90 days
−$40.5M
net selling · 0 buys, 10 sells
Congress, 90 days
0 / 0
no disclosures naming it
Big money
0 / 15
none of the tracked funds disclose it
Calls on record
0
nobody we score has called it yet
MKT CAP $63.1BP/E 78.4DIV YIELD 0.55%FCF YIELD 0.93%REV TTM $3.3B +28.7%NET INCOME $801.9M −52.0%NET CASH —52W 856.96 – 1,689.89SEC XBRL · TTM TO Invalid Date
One year, everything drawn on
Insider buyInsider sellCongress buy, above the lineCongress sell, below10-K / 10-Q filedHOVER A MARKER FOR THE FILING
THE WORK ORDER · 2026-10-22
Insiders (90d): $40.5M net selling
Shorts (latest report): 2M short · +159K last period
Every line of the math28FLAG
Congress is trading it
ALL 6| Traded | Member | Type | Amount |
|---|---|---|---|
| Jun 5 | Byron Donalds R·FL | Sell | $1K–$15K |
| Jun 5 | Byron Donalds R·FL | Sell | $1K–$15K |
| Feb 4 | Markwayne Mullin ?·— | Buy | $15K–$50K |
| Jan 5 | Markwayne Mullin ?·— | Buy | $15K–$50K |
| Jan 5 | Markwayne Mullin ?·— | Buy | $15K–$50K |
| May 3 | Thomas H Tuberville ?·— | Sell | $1K–$15K |
Insider activity
ALL 10| Date | Insider | Type | Value |
|---|---|---|---|
| Sep 28 | CEO | Sell | $176K |
| Sep 28 | CEO | Sell | $14.8M |
| Sep 28 | CEO | Sell | $8.5M |
| Sep 28 | CEO | Sell | $7.8M |
| Sep 28 | CEO | Sell | $3.9M |
| Sep 28 | CEO | Sell | $1.5M |