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SKHY vs. UMC: SK hynix vs. United Microelectronics Stock Comparison

How do SK hynix (SKHY) 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

SK hynix (SKHY) 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.

United Microelectronics (UMC) has been public since September 19, 2000, giving it decades of market history across multiple cycles, while SK hynix (SKHY) listed only on July 10, 2026 and lacks comparable through-cycle data.

Both SK hynix (SKHY) and United Microelectronics (UMC) trade as ADRs — their core financials are comparable, but keep FX, depositary-program fees, and dividend withholding in view for each.

Company profile comparison for SK hynix (SKHY) and United Microelectronics (UMC)
Profile ItemSKHYUMC
NameSK hynix Inc.United Microelectronics Corp. ADR
Country/RegionSouth KoreaTaiwan
GICS SectorInformation TechnologyInformation Technology
GICS Industry GroupSemiconductors & Semiconductor EquipmentSemiconductors & Semiconductor Equipment
GICS IndustrySemiconductors & Semiconductor EquipmentSemiconductors & Semiconductor Equipment
GICS Sub-IndustrySemiconductorsSemiconductors
Market Capitalization897.97 billion USD34.73 billion USD
CurrencyUSDUSD
ExchangeNasdaqNYSE
Listing DateJuly 10, 2026September 19, 2000
Security TypeADRADR

Price Performance

Cumulative Growth

SKHY
UMC
GSPC
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SK hynix (SKHY) 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 SK hynix (SKHY) and United Microelectronics (UMC). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for SK hynix (SKHY) and United Microelectronics (UMC). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Total Return (1Y)--102.63%
Total Return (3Y, Annualized)--31.57%
Total Return (5Y, Annualized)--11.51%

Risk Profile

Drawdown History

SKHY
UMC
GSPC
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SK hynix (SKHY) 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 SK hynix (SKHY) and United Microelectronics (UMC). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Volatility (1Y, Annualized)101.44%67.94%
Beta (5Y)5.361.77
Max Drawdown (5Y)-37.62%-54.30%
Avg. Volume (3M)20.78M11.82M

Risk-Adjusted Performance

Risk-Return Positioning

Both SKHY and UMC need 1-year volatility and 1-year return to plot risk-return positioning.

Risk-Adjusted Metrics

Risk-adjusted metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Sharpe Ratio (1Y)--1.45
Sortino Ratio (1Y)--2.35

Profitability

ROE (TTM)

SK hynix (SKHY) at 92.54% clears its industry range for ROE, a sharper capital-efficiency signal than United Microelectronics (UMC) at 20.37%, which is closer to a typical peer reading.

SKHY

Semiconductors & Semiconductor Equipment industry group

92.54%

SKHY
92.54%
Max
52.82%
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their ROE against the Semiconductors & Semiconductor Equipment industry group benchmark.

Net Margin (TTM)

SK hynix (SKHY) at 70.27% keeps the most of each sales dollar — above its industry’s net margin range — and United Microelectronics (UMC) at 31.95% also retains a top-quartile share.

SKHY

Semiconductors & Semiconductor Equipment industry group

70.27%

SKHY
70.27%
Max
63.80%
Q3
28.36%
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their net margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

Operating Margin (TTM)

SK hynix (SKHY) at 79.66% turns sales into operating profit above its industry’s benchmark range, while United Microelectronics (UMC) at 25.09% operates around its industry’s norm.

SKHY

Semiconductors & Semiconductor Equipment industry group

79.66%

SKHY
79.66%
Max
58.66%
Q3
30.23%
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their operating margin against the Semiconductors & Semiconductor Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
ROE (TTM)92.54%20.37%
ROA (TTM)46.43%5.79%
Net Margin (TTM)70.27%31.95%
Operating Margin (TTM)79.66%25.09%
Gross Margin (TTM)77.38%31.72%

Growth

Revenue Growth

SK hynix (SKHY) at 46.76% 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 SKHY.

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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their Revenue Growth across different time periods.

EPS Growth

SK hynix (SKHY) at 112.46% sits in the top EPS growth quartile, while United Microelectronics (UMC) at -12.57% is closer to the peer norm — faster per-share earnings growth for SKHY.

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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Revenue Growth (YoY)46.76%2.26%
Revenue Growth (3Y CAGR)29.61%-5.19%
EPS Growth (YoY)112.46%-12.57%
EPS Growth (3Y CAGR)165.07%-21.92%

Financial Strength

Current Ratio (MRQ)

United Microelectronics (UMC) at 3.27 keeps current ratio within its industry’s typical mid-range, while SK hynix (SKHY) at 26.88 sits above its industry’s typical mid-range — comfortable liquidity, though possibly with more idle current assets relative to peers.

SKHY

Semiconductors & Semiconductor Equipment industry group

26.88

SKHY
26.88
Max
10.33
Q3
5.62
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their current ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Debt / Equity (MRQ)

Both SK hynix (SKHY) at 0.05 and United Microelectronics (UMC) at 0.17 fund their balance sheets with roughly industry-typical debt-to-equity mixes.

SKHY

Semiconductors & Semiconductor Equipment industry group

0.05

Max
1.46
Q3
0.65
Median
0.27
SKHY
0.05
Q1
0.04
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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SK hynix (SKHY) 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 SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Current Ratio (MRQ)26.883.27
Debt / Equity (MRQ)0.050.17
Net Debt / EBITDA-0.46-0.60

Dividends

Dividend Yield (TTM)

Both SK hynix (SKHY) at 2,118.64% and United Microelectronics (UMC) at 19.43% yield above their industries’ entire benchmark ranges — high enough that dividend safety, not income, becomes the first question.

SKHY

Semiconductors & Semiconductor Equipment industry group

2,118.64%

SKHY
2,118.64%
Max
1.37%
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their dividend yield against the Semiconductors & Semiconductor Equipment industry group benchmark.

Dividend Payout Ratio (TTM)

SK hynix (SKHY) pays no dividend (payout 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile United Microelectronics (UMC) reports a payout of 37.46%, ranking against industry peers normally.

SKHY

Semiconductors & Semiconductor Equipment industry group

0.00%

Max
49.64%
Q3
21.71%
SKHY
0.00%
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their payout ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
Dividend Yield (TTM)2,118.64%19.43%
Dividend Payout Ratio (TTM)0.00%37.46%

Valuation

P/E Ratio (TTM)

Both SK hynix (SKHY) at 8.12 and United Microelectronics (UMC) at 13.07 sit in the cheaper earnings-multiple quartile for P/E ratio, with the market paying less for a dollar of trailing earnings than it pays for typical peers.

SKHY

Semiconductors & Semiconductor Equipment industry group

8.12

Max
110.34
Q3
66.81
Median
37.02
Q1
23.96
SKHY
8.12
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their P/E ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

P/S Ratio (TTM)

Both SK hynix (SKHY) at 0.00 and United Microelectronics (UMC) at 0.13 fetch a relatively low price per dollar of sales, landing in the cheaper P/S ratio quartile of their industries.

SKHY

Semiconductors & Semiconductor Equipment industry group

0.00

Max
21.42
Q3
12.27
Median
5.76
Q1
2.73
SKHY
0.00
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their P/S ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

P/B Ratio (MRQ)

On P/B ratio, both SK hynix (SKHY) at 3.95 and United Microelectronics (UMC) at 2.39 are valued close to their industries’ norm against book — neither stands out from peers.

SKHY

Semiconductors & Semiconductor Equipment industry group

3.95

Max
14.06
Q3
7.44
Median
4.29
SKHY
3.95
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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SK hynix (SKHY) vs. United Microelectronics (UMC): A comparison of their P/B ratio against the Semiconductors & Semiconductor Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for SK hynix (SKHY) and United Microelectronics (UMC)
MetricSKHYUMC
P/E Ratio (TTM)8.1213.07
P/S Ratio (TTM)0.000.13
P/B Ratio (MRQ)3.952.39
Free Cash Flow Yield (TTM)--129.43%