Monolithic Power Systems Inc
NASDAQ: MPWR · TECHNOLOGY · SEMICONDUCTORS
Updated 2026-04-29
Monolithic Power Systems Inc (MPWR) Stock Valuation Analysis
Fair value estimate, historical valuation range, and quality signals for MPWR.
Valued
Valuation reasonably reflects current fundamentals. Limited margin of safety at these levels.
MPWR historical valuation range
Where current P/E sits in MPWR's own 5Y range.
MPWR intrinsic value (DCF)
DCF-based fair value estimate vs current market price.
Standard discounted cash flow models produce unreliable output for unprofitable or near-breakeven companies. Revenue-based multiples such as P/S and EV/Sales, combined with the historical valuation position above, give a more reliable read for this stock.
Intrinsic value calculated using discounted cash flow (DCF) model based on projected free cash flows, discount rate, and terminal growth assumptions. A positive margin of safety indicates the current price is below estimated fair value, providing a cushion against estimation error.
MPWR valuation signals
Quick-read green flags, caution flags, and risks based on current metrics.
P/E Ratio — History
Current: 119.01x
P/S Ratio — History
Current: 26.88x
Is MPWR overvalued in 2026?
Monolithic Power Systems Inc (MPWR) currently trades at $1,526.84 per share with a market capitalization of $74,995,327,000.00. Based on our multi-factor framework, the stock trades at a fair valuation with a Smart Value Score of 56/100. This score blends growth quality, financial health, and price attractiveness into a single institutional-grade read.
The stock trades at a P/E ratio of 119.0x, above its 5-year median of 82.5x. The PEG ratio of 2.47 indicates the price has run ahead of the underlying growth rate.
Looking at its own history, MPWR is currently trading more expensive than 92% of the last 5Y on P/E. This places it in the 92th percentile of its historical range, a zone where forward returns have typically been muted.
A standard DCF model does not produce reliable output for MPWR under current conditions. For unprofitable or near-breakeven companies, revenue-based multiples such as EV/Sales and historical P/S percentile are more informative than intrinsic value calculations.
Financial quality is a concern. The Piotroski F-Score of 1/9 flags weakening fundamentals that deserve closer scrutiny before the valuation case can be fully trusted.
Bottom line: MPWR trades at a fair valuation on our framework, with a Smart Value Score of 56/100. The valuation is defensible but offers no obvious bargain. Patience or a better entry price may reward disciplined buyers.
Frequently asked questions
Is MPWR overvalued in 2026?
Based on a Smart Value Score of 56/100, MPWR is fairly valued. Price reasonably reflects current fundamentals with limited cushion in either direction.
What is MPWR's fair value?
Standard DCF is unreliable for MPWR due to its current profitability profile. Revenue-based approaches such as EV/Sales or historical P/S percentile are more informative for this stock.
What P/E ratio does MPWR trade at?
MPWR trades at a P/E of 119.0x on trailing twelve-month earnings, compared to its 5-year median of 82.5x.
Is MPWR a buy based on valuation?
WallStSmart does not issue buy or sell recommendations. Our Smart Value Score of 56/100 reflects the combined read on growth, quality, and price. The profile is balanced. Best suited for investors with an existing thesis.
How does MPWR's valuation compare to its history?
On P/E, MPWR currently sits in the 92th percentile of its own 5Y range. That is historically expensive relative to where it has traded over the period.
What is MPWR's Smart Value Score?
MPWR's Smart Value Score is 56/100. The Smart Value Score is a proprietary WallStSmart metric blending growth quality, financial health, and valuation attractiveness into a single 0-100 read. Scores above 75 are rare and indicate strong multi-factor alignment.