Start with its own history
At 66.97×, MPWR is 4.3% above its 10-observation annual average. A lower multiple can reflect a lower price, higher earnings, or weaker growth expectations—not necessarily a bargain.
NASDAQ · MPWRSemiconductorsUpdated Nov 5, 2026
Monolithic Power Systems, Inc. P/E ratio
Current valuation, historical context, and peer comparisons.
Current P/E ratio
66.97×
4.3% abovethe 10-year annual average
Share price1,261.08
÷Earnings per share18.83
Price and EPS in quote currency. Calculation details
Investors are paying 66.97 for every 1 of reported earnings per share.
P/E over time
2016 – 2025
Annual P/ESelected-period average 64.20×
3-year average52.35×3 positive annual observations
5-year average57.64×5 positive annual observations
10-year average64.20×10 positive annual observations
Peer median · TTM42.27×7 peers with positive P/E
Historical P/E ratios
Annual period-end data · 22 observations
| Period end | P/E | Change |
|---|---|---|
| Dec 31, 2025 | 70.70× | +339.2% |
| Dec 31, 2024 | 16.10× | -77.1% |
| Dec 31, 2023 | 70.24× | +86.1% |
| Dec 31, 2022 | 37.74× | -59.6% |
| Dec 31, 2021 | 93.43× | -6.4% |
| Dec 31, 2020 | 99.79× | +41.3% |
| Dec 31, 2019 | 70.64× | +43.4% |
| Dec 31, 2018 | 49.26× | -30.7% |
View all 22 annual observations +
| Period end | P/E | Change |
|---|---|---|
| Dec 31, 2017 | 71.11× | +12.8% |
| Dec 31, 2016 | 63.02× | -12.0% |
| Dec 31, 2015 | 71.58× | +32.4% |
| Dec 31, 2014 | 54.07× | -4.8% |
| Dec 31, 2013 | 56.82× | +14.8% |
| Dec 31, 2012 | 49.51× | +28.1% |
| Dec 31, 2011 | 38.64× | +94.1% |
| Dec 31, 2010 | 19.90× | -52.7% |
| Dec 31, 2009 | 42.05× | +140.1% |
| Dec 31, 2008 | 17.51× | -69.8% |
| Dec 31, 2007 | 58.03× | N/M |
| Dec 31, 2006 | N/M | N/M |
| Dec 31, 2005 | 83.28× | N/M |
| Dec 31, 2004 | N/M | N/M |
Change is relative to the preceding observation. N/M values are excluded from averages.
How MPWR compares
Company P/E vs. peer trailing-12-month ratios
| Company | P/E ratio |
|---|---|
 MPWR This stockMonolithic Power Systems, Inc. | 66.97× |
 TXNTexas Instruments Incorporated | 40.30× |
 ONON Semiconductor Corporation | 40.48× |
 AOSLAlpha and Omega Semiconductor Limited | N/M |
 POWIPower Integrations, Inc. | 57.82× |
 ADIAnalog Devices, Inc. | 47.96× |
 DIODDiodes Incorporated | 42.27× |
 STMSTMicroelectronics N.V. | 78.57× |
 RNECYRenesas Electronics Corporation | 8.07× |
Peers are selected by the data provider. Business models and earnings definitions can differ.
Put the numbers in context
What does MPWR’s P/E tell you?
Compare like with like
The median of the 7 positive peer ratios above is 42.27×. Check growth, margins, debt, and earnings quality before interpreting the gap. A faster-growing business may justify a higher multiple.
Check what drives earnings
One-off gains can temporarily lower P/E; unusual charges can raise it. Reported earnings and forward estimates answer different questions. Pair this view with return on equity and liquidity for a fuller picture.
Keep your research connected
Take MPWR into your spreadsheet
Pull historical P/E into Excel or Google Sheets with Wisesheets. Build your own comparisons alongside the rest of your financial model.
Explore WisesheetsQuarterly P/E · latest quarterLQ selects the latest reported quarter. Requires the Wisesheets add-in. See available data
=WISE("MPWR", "PE Ratio", "LQ")Sources & calculation methodology
Current P/E
Share price 1,261.08 ÷ EPS 18.83 = 66.97×. Data is supplied by Financial Modeling Prep through Wisesheets. Quote feed updated Nov 5, 2026; this is not a real-time trading quote.
History & averages
Annual and quarterly P/E observations are provided separately from the current quote. Averages use the latest 3, 5, or 10 annual observations, excluding missing and nonpositive ratios. Pre-IPO observations are omitted. These are period-end observations, not daily averages.
Data definitions and limitations
The current quote feed does not specify the exact EPS filing-period end or whether EPS is basic or diluted. We do not label it as forward P/E. Peer ratios are explicitly trailing-12-month (TTM) values. Historical observations do not include independently verified price and EPS inputs. Sources may update on different schedules; rounded inputs can produce small calculation differences. Historical comparisons describe past pricing, not an estimate of fair value.
MPWR P/E ratio: common questions
The essentials behind the numbers.
Monolithic Power Systems, Inc.'s current P/E is 66.97× based on the quote data last updated Nov 5, 2026. It represents the share price divided by reported earnings per share. Prices and earnings may refresh on different schedules.
Annual P/E uses earnings for a completed fiscal year. Trailing-12-month (TTM) P/E uses the latest four quarters, while forward P/E uses forecast earnings. These are not interchangeable. This page labels peer ratios as TTM and shows dated annual or quarterly historical observations; it does not show forward estimates.
N/M means not meaningful: the feed has no positive P/E for that observation. Negative or zero earnings should not be ranked as a low positive valuation multiple. N/M observations are excluded from the averages shown above.
Divide the share price by earnings per share (EPS). For example, a share price of 100 and EPS of 5 gives a P/E of 20×. This page uses the price and EPS supplied together in the quote when both are positive.
Price timestamps, EPS definitions, share classes, adjustments, and fiscal periods can differ. A forward P/E also uses forecast earnings rather than reported earnings. Compare the inputs and as-of dates before comparing two displayed ratios.
Not necessarily. The average describes previous market pricing, not fair value. Changes in earnings quality, growth expectations, debt, accounting, and business risk can justify a different multiple today.