ONE LEVEL DEEPER
MPWR
Warren Buffett frameworkThe Owner-OperatorBenjamin Graham frameworkThe Value ArchitectMichael Mauboussin frameworkThe Expectations EngineerHoward Marks frameworkThe Cycle WhispererPeter Lynch frameworkThe Everyday Edge

Growing 26.4% with perfect execution, but Lynch's PEG test flashes red at 2.4x — great company, wrong price.

cautiousLeaning Bullishconviction

This framework sees a fast grower executing flawlessly but priced beyond what even Lynch would pay, with insiders selling into institutional exodus.

THE LENSES
THE CLASSIFICATIONtextbook

What breed of company is this, and does it match Lynch's preferences?

TTM revenue growth of 26.4% with Q4'25 revenue hitting record $751.2 million
Consistent double-digit growth across multiple quarters, accelerating from prior periods
Operating margin stable at 26.6% in Q4'25, in 85th percentile of historical range
94.4% revenue concentration in DC-to-DC power products serving diverse end markets

Classic Lynch fast grower — the land of 10-baggers. Growing above 20% with expanding margins and a focused product line. This is exactly the type Lynch spent his career hunting, though the 64.6x P/E would give him pause.

Revenue
THE GROWTH STORYclear

Can I explain this to my neighbor over the fence?

"They make the power chips that convert electricity for everything from data centers to cars" — simple story
DC-to-DC products represent 94.4% of revenue, highly focused business model
China generates 55.3% of 2025 revenue, concentrated geographic exposure
Revenue positively correlates with inflation (0.979) and interest rates (0.712)

The story is beautifully simple — power management chips for the digital world. Lynch would love the clarity but worry about China concentration. The defensive characteristics (thriving in high-rate environments) add an interesting twist to a growth story.

Revenue by Segment
THE PEG RATIOexpensive

Am I paying a fair price for the growth I'm getting?

P/E ratio of 64.6x against TTM revenue growth of 26.4%
PEG ratio approximately 2.4x, well above Lynch's 1.0x fair value threshold
Earnings yield of 0.39% versus 4.33% treasury rate creates -3.94% spread
Market implies 9.65% perpetual growth versus 26.4% trailing growth

This is where Lynch would walk away. A PEG above 2.0 means paying too much for growth, no matter how good. The market expects significant deceleration from current growth rates, and even then the valuation requires faith.

P/E Ratio
WHERE IN THE STORYtransitional

Are we in the early, middle, or late innings of this growth story?

Revenue growth accelerating to 26.4% TTM, still gaining momentum
Operating margins at 26.6% in Q4'25, near historical highs
Institutional ownership collapsed 45.5 percentage points in Q4'25 to 99.7%
Perfect earnings execution with 38 of 39 quarters beating estimates

Mixed signals here. The fundamentals scream middle innings — growth strong, margins expanding, execution flawless. But the institutional exodus suggests late innings perception. Lynch would note that when the big money leaves despite great numbers, they often know something.

Operating Margin
KEY NUMBERS
VERDICT

Applying this framework reveals a classic Lynch dilemma: a perfect fast grower trading at an imperfect price. MPWR executes flawlessly with 26.4% growth and simple story, but at 64.6x earnings with a 2.4x PEG, even Lynch would wait for a better entry. The institutional exodus and insider selling suggest the easy money has been made. If this traded at 25x earnings, would Lynch be all over it?

This analysis applies Peter Lynch's published investment framework to publicly available financial data. It is not authored by, endorsed by, or affiliated with Peter Lynch. Educational purposes only. Not financial advice.

OTHER PERSPECTIVES
Warren Buffett framework
The Owner-Operator
Neutral
Benjamin Graham framework
The Value Architect
Leaning Bearish
Michael Mauboussin framework
The Expectations Engineer
Leaning Bearish
Howard Marks framework
The Cycle Whisperer
Bearish
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