MONOLITHIC POWER SYSTEMS, INC. · Semiconductors

MPWR

Elevated riskAI: Chips and memoryNext report: In 2 days (est.)

View price ↗

The short version

A high-quality, profitable business with growing sales. Institutions are adding.

Going well

Sales up 48% in the latest quarter vs a year ago
Profitable every year for 10 years
Sales up 26% last year

Money moves

Insiders sold $40.3M in the last 30 days, all through pre-planned sales
Institutions added 3.1% to their holdings in the quarter ending June 2026 (622 bought, 528 sold)
Held by Ray Dalio (Bridgewater)

Facts from SEC filings, not a recommendation.

What the price means

Price as of Oct 26

$1,167.45+2.4% that day

Company value: $57.4B; Share price times all shares
Price vs profit (P/E): 71.3x; You pay about $71 for each $1 of yearly profit
Price vs sales: 17.5x; Company value is 17.5 times a year of sales
Dividend yield: 0.5%; Yearly dividend as a share of today's price
Cash vs value: 2%; Cash as a share of company value

From MPWR's last IEX trade and its SEC filings (profits and sales over the last four quarters). A starting point for research, not a verdict.

The business over time

Last 12 quarters, from SEC filings

Sales, Jun '26

$980.6M+48% vs a year earlier

Sep '23Tap a barJun '26

Last 12 months: $3.3B, up 29% from the 12 months before. Over 5 years, sales grew about 27% a year.

What the price assumes

Your guesses, our math

Move the sliders to your own view of MPWR. Starting points are the company's recent numbers.

Sales growth+29% a yearRecently: +29% a yearProfit margin25%Last 12 months: 24.5%P/E at the end40xToday: 71.3x. Many steady companies trade at 12x to 25xShare count change0% a yearBelow zero means buybacks; above zero means new shares (dilution)

Sales in 5 years$11.7B

Profit in 5 years$2.9B

Price these guesses point to$2,379.33+104% vs $1,167.45 todayAbout +15% a year, before dividends

What today's price needs: with a 25% margin and a 40x P/E, sales would have to grow about 12% a year for 5 years just to match today's price.

Simple math on your guesses, not a forecast or a price target. Real results depend on many things these sliders leave out.

Price

Price chart by TradingView.

Business quality

The checklist Warren Buffett-style investors use. Annual numbers for 2025.

7/7Strong

PassReturn on equity 15%+Earns a lot on the money owners have in the business.19.2%
PassDebt under half of equityNot relying on borrowed money.No debt reported
PassNet margin 10%+Keeps at least 10 cents of profit from each dollar of sales.22.3%
PassProfitable every yearSteady profits, not one good year.10 of 10 years
PassFree cash flow positiveBrings in more cash than it spends to run and grow.$666.2M
PassShare count not growingNot diluting owners. Falling means buybacks.-0.1% in 3 years
PassGross margin 40%+Pricing power: sells for well above what it costs to make.55.2%

Revenue: $2.8B; +26.4% vs prior year
5-year growth: +27.0%/yr; revenue, per year
Total debt: None; 0.00x equity
Current ratio: 5.91x; short-term assets / bills due

From annual reports filed with the SEC. A checklist is a starting point for research, not a verdict.

Latest quarter

Quarter ended Jun 30, 2026

Reported Jul 30

Revenue: $980.6M; +47.6% YoY
EPS: $5.22; vs $2.81
Op. margin: 31.0%; +6.2 pts
Gross margin: 55.2%; +0.1 pts
Free cash flow: $145.5M
Share count: +2.6%; vs a year ago

Insider rating

Last 90 days

43Mixed

Pre-planned sales of $40.3M (weaker signal)

50 is neutral. Buying by more insiders, top executives and bigger stakes raises it. Selling lowers it; pre-planned sales count less.

Weekly insider trend

13 weeks agoBoughtSoldThis week

Filing buzz

Last 7 days vs normal

0/ 100

This week: 0
Normal week: 1.4
vs normal: 0.0x

SEC filings of any kind. 50 means a normal week.

Institutional ownership

Accumulating+3.1%

Institutions added 3.1% to their holdings. 622 bought, 528 sold.

Shares held by institutions47.6M

Sep '24Jun '26

Safety check

From SEC filings

Share count growthYearly rate, last 3 years

+0.9%

Cash runwayAt last year's cash burn

Cash flow positive

Debt to equityLatest balance sheet: debt compared with what owners have

No debt reported

Shares outstandingLatest reported

49M

Why elevated risk

Past financials no longer reliable

Earnings reports

Last 12

Next reportIn 2 days (est.)Estimated from the same quarter last year

Results filedJul 30
Results filedApr 30
Results filedFeb 5
Results filedOct 30, 2025
Results filedJul 31, 2025

Flags and big holders

Offerings 6 months, flags 12 months, holders 90 days

Past financials no longer reliableFeb 27 · View filing ↗Red flag

Insider trades

Open-market buys and sells, last 90 days

Bought$00 insiders

Sold$40.3M1 insider, 1 pre-planned

Insider	Trade	Shares	Avg price	Value	Owns after	Date
Michael HsingCEO	Sell	30K	$1344.97	$40.3M	818K	Sep 28Filing ↗
-3.5% of their holdings $1323.31 to $1356.94 across 8 trades Pre-planned sale (10b5-1) Also Director Filed 2 days after