Monolithic Power Systems, Inc. (MPWR) vs United Microelectronics Corporation (UMC)
A side-by-side comparison of Monolithic Power Systems, Inc. and United Microelectronics Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of September 8, 2026. Differences are shown without an overall score or investment verdict.
MPWR
Monolithic Power Systems, Inc.
$1,222.31TechnologyDelayed quote: Sep 8, 2026, 3:15 PM EDT
UMC
United Microelectronics Corporation
$21.82TechnologyDelayed quote: Sep 8, 2026, 3:15 PM EDT
Total return — MPWR vs UMC
growth of $100 · dividends reinvested · last 10yMPWR +1656.7% (+33.2%/yr)UMC +1649.7% (+33.1%/yr)MPWR compounded faster over this window
MPWR UMC
MPWR vs UMC: by the numbers
- •MPWR is the larger company ($60.05B vs $54.43B market cap).
- •UMC trades at the lower trailing earnings multiple (19.67 vs 74.99 P/E), one valuation lens rather than an overall verdict.
- •UMC converts more revenue to profit (33.14% vs 24.41% net margin).
- •MPWR grew revenue faster over the past five years (25.77% vs 9.39% CAGR).
- •UMC pays the higher dividend yield (1.93% vs 0.58%).
Metrics side by side
Valuation
| Metric | MPWR | UMC |
|---|---|---|
| P/E ratio | 74.99 | 19.67 |
| Forward P/E | 44.63 | N/A |
| P/S ratio | 18.42 | 6.53 |
| P/B ratio | 15.47 | 3.74 |
| EV / EBITDA | 59.29 | 13.93 |
| FCF yield | 0.97% | 3.61% |
Profitability
| Metric | MPWR | UMC |
|---|---|---|
| Gross margin | 55.20% | 30.60% |
| Operating margin | 28.72% | 19.71% |
| Net margin | 24.41% | 33.14% |
| ROE | 20.51% | 18.99% |
| ROIC | 18.22% | 8.07% |
Dividends
| Metric | MPWR | UMC |
|---|---|---|
| Dividend yield | 0.58% | 1.93% |
| Payout ratio | 43.63% | 37.96% |
Growth (annualized)
| Metric | MPWR | UMC |
|---|---|---|
| Revenue CAGR (5Y) | 25.77% | 9.39% |
| EPS CAGR (5Y) | 28.43% | 4.35% |
| FCF CAGR (5Y) | 19.36% | 6.34% |
| Total return CAGR (5Y) | 20.36% | 16.66% |
Frequently asked
- Which has the lower trailing P/E, MPWR or UMC?
- UMC has the lower trailing P/E: MPWR trades at 74.99 and UMC at 19.67. P/E is one valuation measure and does not by itself establish which business is cheaper.
- Which has grown faster, MPWR or UMC?
- Over the past five years, MPWR grew revenue faster — MPWR at a 25.77% CAGR versus UMC at 9.39%.
- Does MPWR or UMC pay a bigger dividend?
- MPWR yields 0.58% and UMC yields 1.93% based on trailing dividends and the latest price.
- Is MPWR or UMC more profitable?
- UMC runs the higher net margin — MPWR at 24.41% versus UMC at 33.14%.
- How have MPWR and UMC total returns compared?
- Over the past 10 years, MPWR delivered 32.86% and UMC delivered 33.19% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
Monolithic Power Systems P/E ratioUnited Microelectronics P/E ratioMonolithic Power Systems dividend yieldUnited Microelectronics dividend yieldMonolithic Power Systems ROEUnited Microelectronics ROEMonolithic Power Systems operating marginUnited Microelectronics operating marginMonolithic Power Systems revenue growthUnited Microelectronics revenue growthMonolithic Power Systems free cash flowUnited Microelectronics free cash flow
Monolithic Power Systems & United Microelectronics appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified September 8, 2026.