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.
| Profile Item | SKHY | UMC |
|---|---|---|
| Name | SK hynix Inc. | United Microelectronics Corp. ADR |
| Country/Region | South Korea | 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 | 897.97 billion USD | 34.73 billion USD |
| Currency | USD | USD |
| Exchange | Nasdaq | NYSE |
| Listing Date | July 10, 2026 | September 19, 2000 |
| Security Type | ADR | ADR |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | SKHY | UMC |
|---|---|---|
| Total Return (1Y) | -- | 102.63% |
| Total Return (3Y, Annualized) | -- | 31.57% |
| Total Return (5Y, Annualized) | -- | 11.51% |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
| Metric | SKHY | UMC |
|---|---|---|
| Volatility (1Y, Annualized) | 101.44% | 67.94% |
| Beta (5Y) | 5.36 | 1.77 |
| Max Drawdown (5Y) | -37.62% | -54.30% |
| Avg. Volume (3M) | 20.78M | 11.82M |
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
| Metric | SKHY | UMC |
|---|---|---|
| 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%
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%
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%
Profitability Metrics
| Metric | SKHY | UMC |
|---|---|---|
| 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.
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.
Growth Metrics
| Metric | SKHY | UMC |
|---|---|---|
| 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
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
Financial Strength Metrics
| Metric | SKHY | UMC |
|---|---|---|
| Current Ratio (MRQ) | 26.88 | 3.27 |
| Debt / Equity (MRQ) | 0.05 | 0.17 |
| 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%
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%
Dividend Metrics
| Metric | SKHY | UMC |
|---|---|---|
| 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
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
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
Valuation Metrics
| Metric | SKHY | UMC |
|---|---|---|
| P/E Ratio (TTM) | 8.12 | 13.07 |
| P/S Ratio (TTM) | 0.00 | 0.13 |
| P/B Ratio (MRQ) | 3.95 | 2.39 |
| Free Cash Flow Yield (TTM) | -- | 129.43% |