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

At 64.6x earnings with insiders selling 20 straight quarters, even 97.4% execution perfection can't overcome the owner's math.

cautiousNeutralconviction

A company generating excellent earnings at 64.6x P/E faces the eternal question: can growth justify a price that assumes perfection?

THE LENSES
THE EARNINGS MACHINEexceptional

Are the earnings predictable and growing steadily?

Beat earnings 38 of 39 quarters (97.4% success rate) with perfect revenue beat record
Revenue grew 26.4% TTM to $751.2M in Q4'25, marking 98th percentile of 10-year range
Operating margin stable at 26.6% in Q4'25, maintaining 85th percentile of historical range
Net income and EPS both at 93rd percentile in Q4'25, demonstrating consistent outperformance

This framework sees a remarkable earnings machine with near-perfect predictability. The 97.4% beat rate over 39 quarters combined with consistent margin maintenance through various economic cycles demonstrates exactly the kind of reliable compounding this framework values.

Revenue
THE MOATstrong

Does this business have sustainable competitive advantages?

Gross margins stable at 55.1% through multiple cycles, indicating pricing discipline
94.4% revenue concentration in DC-to-DC products creates switching costs for customers
Operating margins maintained at 26-27% range through rate shocks and banking crises
Revenue shows 0.979 correlation with inflation, demonstrating strong pricing power

The framework identifies a solid moat in specialized power management products with stable margins and evident pricing power. The high product concentration, while a risk, also reflects deep expertise that creates customer dependency.

Gross Margin
THE OWNER'S MATHexpensive

Would buying this entire business today make mathematical sense?

Trading at 64.6x earnings with 0.39% earnings yield vs 4.33% treasury yield
Current price 291.5% above DCF fair value of $285.67
Market implies 9.65% perpetual growth vs 26.4% trailing growth rate
P/E at 57th percentile of 10-year range despite elevated rate environment

Applying this framework's owner math reveals a challenging proposition: paying 64.6x earnings for even an excellent business requires extraordinary faith. The negative 3.94% spread to treasuries means an owner needs substantial growth just to match risk-free returns.

Earnings Yield
MANAGEMENT AS STEWARDSconcerning

Are managers acting as owners or agents?

Insiders sold for 20 consecutive quarters despite stock rising 261% from $309 to $1,118
Capital allocation focuses on R&D (91.1% of Q4'25 OCF) and dividends (71.3%)
Minimal buyback activity with only $2.0M in Q4'25 despite strong cash position
Institutional ownership collapsed 45.5 percentage points in Q4'25 to 99.7%

This framework sees troubling signals in management behavior. Twenty consecutive quarters of insider selling while delivering perfect execution suggests managers view their own shares as overvalued, contradicting their public optimism.

Insider Net Buying/Selling
KEY NUMBERS
VERDICT

This framework sees a wonderful business at a price that defies mathematical sense. MPWR's earnings machine runs with Swiss watch precision, delivering 38 beats in 39 quarters behind a solid moat in specialized power products. But at 64.6x earnings, even perfection isn't enough - an owner pays $64.60 for each dollar of earnings while treasuries offer $1 for $23. Management's 20-quarter selling streak suggests they understand this arithmetic. Would you buy a perfect machine if the price assumed it would stay perfect forever?

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

OTHER PERSPECTIVES
Peter Lynch framework
The Everyday Edge
Leaning Bullish
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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