MPWR
Monolithic Power Systems, Inc.Technology · $66.5B market cap
Verdict
Share price
$1,439.73
close of Oct 3, 2026
Fair value
$559.06
Sticker Price
Payback Price
$223.62
buy price
MPWR is Overpriced: at $1,439.73 it trades 158% above its fair value of $559.06. Its buy price (Payback Price) is $223.62, 84% below today's price. Business quality is strong: all 5 key numbers clear the 10% bar.
How we valued it
Earnings Power. Our 10-year earnings projection came out at less than a fifth of the share price, too far from reality to publish. So we use a simpler measure: today's normal earnings at the price-to-earnings ratio it has typically traded at.
Business quality
5 of 5 clear the 10% bar. What are the Big Five?
Follow MPWR
Get notified when it reaches its buy price of $223.62. Free.
Create a free accountSuperinvestors
2 of the investors we track hold MPWR. In Q2 2026, 1 opened a position. Who we track
Torray Funds
Torray Funds · as of Q2 2026
$5.1M
3,715 shares
Lee Ainslie
Maverick Capital · as of Q2 2026
$820K
593 shares
Moves in Q2 2026
New position: Lee Ainslie
Insider activity
Since Jul 1, 2026: no open-market purchases, 25 sales worth $20.7M and 4 other filings (stock awards, tax withholding and similar). Why purchases matter
Sales
CHANG KUO WEI HERBERT
director · 2026-08-24
Sold
$64K
DEAN ROBERT W II
Interim CFO · 2026-08-24
Sold
$42K
DEAN ROBERT W II
Interim CFO · 2026-08-17
Sold
$8K
CHANG KUO WEI HERBERT
director · 2026-08-11
Sold
$71K
DEAN ROBERT W II
Interim CFO · 2026-08-05
Sold
$141K
Show all 25 salesShow fewer
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-08-03
Sold
$40K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$155K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$164K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$297K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$69K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$567K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$576K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$649K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$329K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$68K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$7.6M
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$2.0M
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$2.5M
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$2.0M
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$1.0M
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$617K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$541K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$361K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-15
Sold
$692K
Sciammas Maurice
EVP, WW Sales & Marketing · 2026-07-01
Sold
$41K
Other filings
About Monolithic Power Systems, Inc.
Monolithic Power Systems, Inc. specializes in the creation, promotion, and sale of advanced semiconductor components for power management. Their innovative solutions cater to a broad spectrum of industries, including information technology, data storage, automotive, industrial applications, telecommunications, and consumer electronics. A core offering consists of direct current (DC) to DC integrated circuits (ICs)…
Semiconductors
Fair value and Payback Price are estimates from the company's reported financials, not investment advice. Prices as of the close of Oct 3, 2026. How the Payback Price works