SKHY vs. STM: SK hynix vs. STMicroelectronics Stock Comparison
How do SK hynix (SKHY) and STMicroelectronics (STM) 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 STMicroelectronics (STM) are both classified in the Semiconductors sub-industry within the broader Semiconductors & Semiconductor Equipment industry, placing them in the closest GICS peer bucket.
STMicroelectronics (STM) has been public since December 8, 1994, 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 STMicroelectronics (STM) trade as ADRs — their core financials are comparable, but keep FX, depositary-program fees, and dividend withholding in view for each.
| Profile Item | SKHY | STM |
|---|---|---|
| Name | SK hynix Inc. | STMicroelectronics N.V. |
| Country/Region | South Korea | Switzerland |
| 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 | 37.30 billion USD |
| Currency | USD | USD |
| Exchange | Nasdaq | NYSE |
| Listing Date | July 10, 2026 | December 8, 1994 |
| Security Type | ADR | ADR |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | SKHY | STM |
|---|---|---|
| Total Return (1Y) | -- | 90.64% |
| Total Return (3Y, Annualized) | -- | 4.24% |
| Total Return (5Y, Annualized) | -- | -1.95% |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
| Metric | SKHY | STM |
|---|---|---|
| Volatility (1Y, Annualized) | 101.44% | 62.24% |
| Beta (5Y) | 5.36 | 2.00 |
| Max Drawdown (5Y) | -37.62% | -66.66% |
| Avg. Volume (3M) | 20.78M | 9.18M |
Risk-Adjusted Performance
Risk-Return Positioning
Both SKHY and STM need 1-year volatility and 1-year return to plot risk-return positioning.
Risk-Adjusted Metrics
| Metric | SKHY | STM |
|---|---|---|
| Sharpe Ratio (1Y) | -- | 1.39 |
| Sortino Ratio (1Y) | -- | 2.07 |
Profitability
ROE (TTM)
SK hynix (SKHY) at 92.54% clears its industry range for ROE, a sharper capital-efficiency signal than STMicroelectronics (STM) at 2.95%, 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%
STM
Semiconductors & Semiconductor Equipment industry group
2.95%
- Max
- 52.82%
- Q3
- 22.26%
- Median
- 10.58%
- STM
- 2.95%
- Q1
- 1.29%
- Min
- -16.89%
Net Margin (TTM)
SK hynix (SKHY) at 70.27% converts revenue to bottom-line profit above its industry’s benchmark range, while STMicroelectronics (STM) at 3.80% keeps roughly the typical share for its industry.
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%
STM
Semiconductors & Semiconductor Equipment industry group
3.80%
- Max
- 63.80%
- Q3
- 28.36%
- Median
- 11.44%
- STM
- 3.80%
- 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 STMicroelectronics (STM) at 11.10% 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%
STM
Semiconductors & Semiconductor Equipment industry group
11.10%
- Max
- 58.66%
- Q3
- 30.23%
- Median
- 15.91%
- STM
- 11.10%
- Q1
- 7.54%
- Min
- -25.74%
Profitability Metrics
| Metric | SKHY | STM |
|---|---|---|
| ROE (TTM) | 92.54% | 2.95% |
| ROA (TTM) | 46.43% | 2.63% |
| Net Margin (TTM) | 70.27% | 3.80% |
| Operating Margin (TTM) | 79.66% | 11.10% |
| Gross Margin (TTM) | 77.38% | 35.53% |
Growth
Revenue Growth
SK hynix (SKHY) at 46.76% sits in the top revenue growth quartile, while STMicroelectronics (STM) at -11.07% is in the bottom quartile, showing a clear gap in revenue momentum.
EPS Growth
SK hynix (SKHY) at 112.46% sits in the top EPS growth quartile, while STMicroelectronics (STM) at -89.16% is in the bottom quartile, showing a clear gap in earnings momentum.
Growth Metrics
| Metric | SKHY | STM |
|---|---|---|
| Revenue Growth (YoY) | 46.76% | -11.07% |
| Revenue Growth (3Y CAGR) | 29.61% | -9.89% |
| EPS Growth (YoY) | 112.46% | -89.16% |
| EPS Growth (3Y CAGR) | 165.07% | -66.39% |
Financial Strength
Current Ratio (MRQ)
STMicroelectronics (STM) at 3.13 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
STM
Semiconductors & Semiconductor Equipment industry group
3.13
- Max
- 10.33
- Q3
- 5.62
- Median
- 3.33
- STM
- 3.13
- Q1
- 2.35
- Min
- 1.03
Debt / Equity (MRQ)
Both SK hynix (SKHY) at 0.05 and STMicroelectronics (STM) at 0.19 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
STM
Semiconductors & Semiconductor Equipment industry group
0.19
- Max
- 1.46
- Q3
- 0.65
- Median
- 0.27
- STM
- 0.19
- Q1
- 0.04
- Min
- 0.00
Financial Strength Metrics
| Metric | SKHY | STM |
|---|---|---|
| Current Ratio (MRQ) | 26.88 | 3.13 |
| Debt / Equity (MRQ) | 0.05 | 0.19 |
| Net Debt / EBITDA | -0.46 | -0.63 |
Dividends
Dividend Yield (TTM)
STMicroelectronics (STM) at 0.90% earns its spot in the top quartile of its industry’s yields; SK hynix (SKHY) at 2,118.64% is past the top of its own peer range — territory where a dividend-safety check matters more than the headline number.
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%
STM
Semiconductors & Semiconductor Equipment industry group
0.90%
- Max
- 1.37%
- STM
- 0.90%
- 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 STMicroelectronics (STM) reports a payout of 63.16%, 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%
STM
Semiconductors & Semiconductor Equipment industry group
63.16%
- STM
- 63.16%
- Max
- 49.64%
- Q3
- 21.71%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
Dividend Metrics
| Metric | SKHY | STM |
|---|---|---|
| Dividend Yield (TTM) | 2,118.64% | 0.90% |
| Dividend Payout Ratio (TTM) | 0.00% | 63.16% |
Valuation
P/E Ratio (TTM)
SK hynix (SKHY) at 8.12 sits in the cheaper P/E ratio quartile, while STMicroelectronics (STM) at 73.19 sits in the richer quartile — a clear split in what investors pay for each dollar of trailing earnings.
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
STM
Semiconductors & Semiconductor Equipment industry group
73.19
- Max
- 110.34
- STM
- 73.19
- Q3
- 66.81
- Median
- 37.02
- Q1
- 23.96
- Min
- 8.12
P/S Ratio (TTM)
Both SK hynix (SKHY) at 0.00 and STMicroelectronics (STM) at 2.73 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
STM
Semiconductors & Semiconductor Equipment industry group
2.73
- Max
- 21.42
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- STM
- 2.73
- Min
- 0.00
P/B Ratio (MRQ)
STMicroelectronics (STM) at 2.09 sits in the lower P/B ratio quartile against book while SK hynix (SKHY) at 3.95 is valued near its industry’s middle — STM is cheaper on assets, though weigh it against ROE and asset quality.
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
STM
Semiconductors & Semiconductor Equipment industry group
2.09
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- Q1
- 2.30
- STM
- 2.09
- Min
- 0.20
Valuation Metrics
| Metric | SKHY | STM |
|---|---|---|
| P/E Ratio (TTM) | 8.12 | 73.19 |
| P/S Ratio (TTM) | 0.00 | 2.73 |
| P/B Ratio (MRQ) | 3.95 | 2.09 |
| Free Cash Flow Yield (TTM) | -- | 0.29% |