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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.

Company profile comparison for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
Profile ItemMPWRUMC
NameMonolithic Power Systems Inc.United Microelectronics Corp. ADR
Country/RegionUnited StatesTaiwan
GICS SectorInformation TechnologyInformation Technology
GICS Industry GroupSemiconductors & Semiconductor EquipmentSemiconductors & Semiconductor Equipment
GICS IndustrySemiconductors & Semiconductor EquipmentSemiconductors & Semiconductor Equipment
GICS Sub-IndustrySemiconductorsSemiconductors
Market Capitalization58.06 billion USD34.73 billion USD
CurrencyUSDUSD
ExchangeNasdaqNYSE
Listing DateNovember 19, 2004September 19, 2000
Security TypeCommon StockADR

Price Performance

Cumulative Growth

MPWR
UMC
GSPC
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Monolithic Power Systems (MPWR) and United Microelectronics (UMC). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Monolithic Power Systems (MPWR) and United Microelectronics (UMC). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
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

MPWR
UMC
GSPC
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Monolithic Power Systems (MPWR) and United Microelectronics (UMC). Each bar is the share of months whose return fell in that 5% bucket.

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.

Risk profile metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
Volatility (1Y, Annualized)57.22%67.94%
Beta (5Y)1.671.77
Max Drawdown (5Y)-51.65%-54.30%
Avg. Volume (3M)776.23K11.82M

Risk-Adjusted Performance

Risk-Return Positioning

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MPWR and UMC are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
Sharpe Ratio (1Y)0.661.45
Sortino Ratio (1Y)0.982.35

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%
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their ROE against the Semiconductors & Semiconductor Equipment industry group benchmark.

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%
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their net margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

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%
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their operating margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
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.

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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their Revenue Growth across different time periods.

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.

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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
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
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their current ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

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
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their debt-to-equity ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
Current Ratio (MRQ)3.703.27
Debt / Equity (MRQ)0.010.17
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%
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their dividend yield against the Semiconductors & Semiconductor Equipment industry group benchmark.

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%
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their payout ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
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
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their P/E ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

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
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their P/S ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

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
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Monolithic Power Systems (MPWR) vs. United Microelectronics (UMC): A comparison of their P/B ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for Monolithic Power Systems (MPWR) and United Microelectronics (UMC)
MetricMPWRUMC
P/E Ratio (TTM)65.2713.07
P/S Ratio (TTM)15.530.13
P/B Ratio (MRQ)15.562.39
Free Cash Flow Yield (TTM)0.87%129.43%