MPWR vs. UMC: Monolithic Power Systems vs. United Microelectronics Stock Comparison
How do Monolithic Power Systems (MPWR) and United Microelectronics (UMC) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.
Company Profile
Monolithic Power Systems (MPWR) and United Microelectronics (UMC) are both classified in the Semiconductors sub-industry within the broader Semiconductors & Semiconductor Equipment industry, placing them in the closest GICS peer bucket.
Monolithic Power Systems (MPWR) trades as ordinary local shares, while United Microelectronics (UMC) trades as an ADR — compare with FX exposure, depositary-program fees, and dividend-withholding-tax differences in mind.
| Profile Item | MPWR | UMC |
|---|---|---|
| Name | Monolithic Power Systems Inc. | United Microelectronics Corp. ADR |
| Country/Region | United States | Taiwan |
| GICS Sector | Information Technology | Information Technology |
| GICS Industry Group | Semiconductors & Semiconductor Equipment | Semiconductors & Semiconductor Equipment |
| GICS Industry | Semiconductors & Semiconductor Equipment | Semiconductors & Semiconductor Equipment |
| GICS Sub-Industry | Semiconductors | Semiconductors |
| Market Capitalization | 58.06 billion USD | 34.73 billion USD |
| Currency | USD | USD |
| Exchange | Nasdaq | NYSE |
| Listing Date | November 19, 2004 | September 19, 2000 |
| Security Type | Common Stock | ADR |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | MPWR | UMC |
|---|---|---|
| Total Return (1Y) | 42.29% | 102.63% |
| Total Return (3Y, Annualized) | 42.13% | 31.57% |
| Total Return (5Y, Annualized) | 20.48% | 11.51% |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
United Microelectronics (UMC) is heavily traded at around 11.82M shares per day, whereas Monolithic Power Systems (MPWR) sees a more moderate 776.23K — larger orders in the latter may require more patience and tighter control over order sizing.
| Metric | MPWR | UMC |
|---|---|---|
| Volatility (1Y, Annualized) | 57.22% | 67.94% |
| Beta (5Y) | 1.67 | 1.77 |
| Max Drawdown (5Y) | -51.65% | -54.30% |
| Avg. Volume (3M) | 776.23K | 11.82M |
Risk-Adjusted Performance
Risk-Return Positioning
Risk-Adjusted Metrics
| Metric | MPWR | UMC |
|---|---|---|
| Sharpe Ratio (1Y) | 0.66 | 1.45 |
| Sortino Ratio (1Y) | 0.98 | 2.35 |
Profitability
ROE (TTM)
Monolithic Power Systems (MPWR) at 24.47% sits in the top ROE quartile, while United Microelectronics (UMC) at 20.37% is closer to the peer norm — stronger capital efficiency for MPWR.
MPWR
Semiconductors & Semiconductor Equipment industry group
24.47%
- Max
- 52.82%
- MPWR
- 24.47%
- Q3
- 22.26%
- Median
- 10.58%
- Q1
- 1.29%
- Min
- -16.89%
UMC
Semiconductors & Semiconductor Equipment industry group
20.37%
- Max
- 52.82%
- Q3
- 22.26%
- UMC
- 20.37%
- Median
- 10.58%
- Q1
- 1.29%
- Min
- -16.89%
Net Margin (TTM)
United Microelectronics (UMC) at 31.95% retains a top-quartile share of revenue as profit, ahead of Monolithic Power Systems (MPWR) at 23.89%, which keeps about the industry-typical share.
MPWR
Semiconductors & Semiconductor Equipment industry group
23.89%
- Max
- 63.80%
- Q3
- 28.36%
- MPWR
- 23.89%
- Median
- 11.44%
- Q1
- 0.90%
- Min
- -37.77%
UMC
Semiconductors & Semiconductor Equipment industry group
31.95%
- Max
- 63.80%
- UMC
- 31.95%
- Q3
- 28.36%
- Median
- 11.44%
- Q1
- 0.90%
- Min
- -37.77%
Operating Margin (TTM)
Both Monolithic Power Systems (MPWR) at 29.75% and United Microelectronics (UMC) at 25.09% run core operations about as efficiently as their industries’ norm — neither stands out on operating profitability.
MPWR
Semiconductors & Semiconductor Equipment industry group
29.75%
- Max
- 58.66%
- Q3
- 30.23%
- MPWR
- 29.75%
- Median
- 15.91%
- Q1
- 7.54%
- Min
- -25.74%
UMC
Semiconductors & Semiconductor Equipment industry group
25.09%
- Max
- 58.66%
- Q3
- 30.23%
- UMC
- 25.09%
- Median
- 15.91%
- Q1
- 7.54%
- Min
- -25.74%
Profitability Metrics
| Metric | MPWR | UMC |
|---|---|---|
| ROE (TTM) | 24.47% | 20.37% |
| ROA (TTM) | 15.52% | 5.79% |
| Net Margin (TTM) | 23.89% | 31.95% |
| Operating Margin (TTM) | 29.75% | 25.09% |
| Gross Margin (TTM) | 55.26% | 31.72% |
Growth
Revenue Growth
Monolithic Power Systems (MPWR) at 26.43% sits in the top revenue growth quartile, while United Microelectronics (UMC) at 2.26% is closer to the peer norm — faster top-line expansion for MPWR.
EPS Growth
United Microelectronics (UMC) at -12.57% is around its peer norm for EPS growth, while Monolithic Power Systems (MPWR) at -64.85% drops into the bottom quartile, signaling weaker earnings momentum.
Growth Metrics
| Metric | MPWR | UMC |
|---|---|---|
| Revenue Growth (YoY) | 26.43% | 2.26% |
| Revenue Growth (3Y CAGR) | 15.86% | -5.19% |
| EPS Growth (YoY) | -64.85% | -12.57% |
| EPS Growth (3Y CAGR) | 12.43% | -21.92% |
Financial Strength
Current Ratio (MRQ)
Both Monolithic Power Systems (MPWR) at 3.70 and United Microelectronics (UMC) at 3.27 carry current ratio within their industries’ typical mid-ranges, suggesting balanced short-term liquidity relative to peers.
MPWR
Semiconductors & Semiconductor Equipment industry group
3.70
- Max
- 10.33
- Q3
- 5.62
- MPWR
- 3.70
- Median
- 3.33
- Q1
- 2.35
- Min
- 1.03
UMC
Semiconductors & Semiconductor Equipment industry group
3.27
- Max
- 10.33
- Q3
- 5.62
- Median
- 3.33
- UMC
- 3.27
- Q1
- 2.35
- Min
- 1.03
Debt / Equity (MRQ)
Monolithic Power Systems (MPWR) at 0.01 keeps leverage in the lower industry quartile, while United Microelectronics (UMC) at 0.17 runs a more typical debt-to-equity mix.
MPWR
Semiconductors & Semiconductor Equipment industry group
0.01
- Max
- 1.46
- Q3
- 0.65
- Median
- 0.27
- Q1
- 0.04
- MPWR
- 0.01
- Min
- 0.00
UMC
Semiconductors & Semiconductor Equipment industry group
0.17
- Max
- 1.46
- Q3
- 0.65
- Median
- 0.27
- UMC
- 0.17
- Q1
- 0.04
- Min
- 0.00
Financial Strength Metrics
| Metric | MPWR | UMC |
|---|---|---|
| Current Ratio (MRQ) | 3.70 | 3.27 |
| Debt / Equity (MRQ) | 0.01 | 0.17 |
| Net Debt / EBITDA | -0.92 | -0.60 |
Dividends
Dividend Yield (TTM)
Monolithic Power Systems (MPWR) at 0.67% earns its spot in the top quartile of its industry’s yields; United Microelectronics (UMC) at 19.43% is past the top of its own peer range — territory where a dividend-safety check matters more than the headline number.
MPWR
Semiconductors & Semiconductor Equipment industry group
0.67%
- Max
- 1.37%
- MPWR
- 0.67%
- Q3
- 0.65%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
UMC
Semiconductors & Semiconductor Equipment industry group
19.43%
- UMC
- 19.43%
- Max
- 1.37%
- Q3
- 0.65%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Payout Ratio (TTM)
Both Monolithic Power Systems (MPWR) at 41.65% and United Microelectronics (UMC) at 37.46% pay out an above-typical share of earnings for their industries, leaving thinner cover if profits dip.
MPWR
Semiconductors & Semiconductor Equipment industry group
41.65%
- Max
- 49.64%
- MPWR
- 41.65%
- Q3
- 21.71%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
UMC
Semiconductors & Semiconductor Equipment industry group
37.46%
- Max
- 49.64%
- UMC
- 37.46%
- Q3
- 21.71%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Metrics
| Metric | MPWR | UMC |
|---|---|---|
| Dividend Yield (TTM) | 0.67% | 19.43% |
| Dividend Payout Ratio (TTM) | 41.65% | 37.46% |
Valuation
P/E Ratio (TTM)
United Microelectronics (UMC) at 13.07 sits in the cheaper P/E ratio quartile, while Monolithic Power Systems (MPWR) at 65.27 is closer to its industry’s usual earnings multiple — a discount for UMC, though growth and earnings durability still matter.
MPWR
Semiconductors & Semiconductor Equipment industry group
65.27
- Max
- 110.34
- Q3
- 66.81
- MPWR
- 65.27
- Median
- 37.02
- Q1
- 23.96
- Min
- 8.12
UMC
Semiconductors & Semiconductor Equipment industry group
13.07
- Max
- 110.34
- Q3
- 66.81
- Median
- 37.02
- Q1
- 23.96
- UMC
- 13.07
- Min
- 8.12
P/S Ratio (TTM)
United Microelectronics (UMC) at 0.13 looks cheap on sales in the lower P/S ratio quartile, while Monolithic Power Systems (MPWR) at 15.53 looks rich in the upper quartile — a clear gap in price per dollar of revenue.
MPWR
Semiconductors & Semiconductor Equipment industry group
15.53
- Max
- 21.42
- MPWR
- 15.53
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- Min
- 0.00
UMC
Semiconductors & Semiconductor Equipment industry group
0.13
- Max
- 21.42
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- UMC
- 0.13
- Min
- 0.00
P/B Ratio (MRQ)
United Microelectronics (UMC) at 2.39 sits near its industry’s typical P/B ratio, while Monolithic Power Systems (MPWR) at 15.56 prices above its benchmark range — MPWR looks rich relative to book.
MPWR
Semiconductors & Semiconductor Equipment industry group
15.56
- MPWR
- 15.56
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- Q1
- 2.30
- Min
- 0.20
UMC
Semiconductors & Semiconductor Equipment industry group
2.39
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- UMC
- 2.39
- Q1
- 2.30
- Min
- 0.20
Valuation Metrics
| Metric | MPWR | UMC |
|---|---|---|
| P/E Ratio (TTM) | 65.27 | 13.07 |
| P/S Ratio (TTM) | 15.53 | 0.13 |
| P/B Ratio (MRQ) | 15.56 | 2.39 |
| Free Cash Flow Yield (TTM) | 0.87% | 129.43% |