MKSI vs. SKHY: MKS vs. SK hynix Stock Comparison
How do MKS (MKSI) and SK hynix (SKHY) 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
MKS (MKSI) and SK hynix (SKHY) both belong to the Semiconductors & Semiconductor Equipment industry, though MKSI is classified under Semiconductor Materials & Equipment while SKHY falls under Semiconductors.
MKS (MKSI) has been public since March 30, 1999, 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.
MKS (MKSI) trades as ordinary local shares, while SK hynix (SKHY) trades as an ADR — compare with FX exposure, depositary-program fees, and dividend-withholding-tax differences in mind.
| Profile Item | MKSI | SKHY |
|---|---|---|
| Name | MKS Inc. | SK hynix Inc. |
| Country/Region | United States | South Korea |
| 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 | Semiconductor Materials & Equipment | Semiconductors |
| Market Capitalization | 13.00 billion USD | 897.97 billion USD |
| Currency | USD | USD |
| Exchange | Nasdaq | Nasdaq |
| Listing Date | March 30, 1999 | July 10, 2026 |
| Security Type | Common Stock | ADR |
Price Performance
Cumulative Growth
Trailing Returns
Calendar-Year Returns
Performance Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Total Return (1Y) | 35.07% | -- |
| Total Return (3Y, Annualized) | 46.46% | -- |
| Total Return (5Y, Annualized) | 6.02% | -- |
Risk Profile
Drawdown History
Return Distribution
Risk Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Volatility (1Y, Annualized) | 62.92% | 101.44% |
| Beta (5Y) | 2.12 | 5.36 |
| Max Drawdown (5Y) | -66.57% | -37.62% |
| Avg. Volume (3M) | 1.36M | 20.78M |
Risk-Adjusted Performance
Risk-Return Positioning
Both MKSI and SKHY need 1-year volatility and 1-year return to plot risk-return positioning.
Risk-Adjusted Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Sharpe Ratio (1Y) | 0.49 | -- |
| Sortino Ratio (1Y) | 0.70 | -- |
Profitability
ROE (TTM)
SK hynix (SKHY) at 92.54% clears its industry range for ROE, a sharper capital-efficiency signal than MKS (MKSI) at 20.46%, which is closer to a typical peer reading.
MKSI
Semiconductors & Semiconductor Equipment industry group
20.46%
- Max
- 52.82%
- Q3
- 22.26%
- MKSI
- 20.46%
- Median
- 10.58%
- Q1
- 1.29%
- Min
- -16.89%
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%
Net Margin (TTM)
SK hynix (SKHY) at 70.27% converts revenue to bottom-line profit above its industry’s benchmark range, while MKS (MKSI) at 12.62% keeps roughly the typical share for its industry.
MKSI
Semiconductors & Semiconductor Equipment industry group
12.62%
- Max
- 63.80%
- Q3
- 28.36%
- MKSI
- 12.62%
- Median
- 11.44%
- Q1
- 0.90%
- Min
- -37.77%
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%
Operating Margin (TTM)
SK hynix (SKHY) at 79.66% turns sales into operating profit above its industry’s benchmark range, while MKS (MKSI) at 23.21% operates around its industry’s norm.
MKSI
Semiconductors & Semiconductor Equipment industry group
23.21%
- Max
- 58.66%
- Q3
- 30.23%
- MKSI
- 23.21%
- Median
- 15.91%
- Q1
- 7.54%
- Min
- -25.74%
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%
Profitability Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| ROE (TTM) | 20.46% | 92.54% |
| ROA (TTM) | 6.28% | 46.43% |
| Net Margin (TTM) | 12.62% | 70.27% |
| Operating Margin (TTM) | 23.21% | 79.66% |
| Gross Margin (TTM) | 47.26% | 77.38% |
Growth
Revenue Growth
SK hynix (SKHY) at 46.76% sits in the top revenue growth quartile, while MKS (MKSI) at 9.62% is closer to the peer norm — faster top-line expansion for SKHY.
EPS Growth
Both MKS (MKSI) at 55.52% and SK hynix (SKHY) at 112.46% sit in the top peer quartile for EPS growth, so each is compounding per-share earnings faster than typical industry peers.
Growth Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Revenue Growth (YoY) | 9.62% | 46.76% |
| Revenue Growth (3Y CAGR) | 3.49% | 29.61% |
| EPS Growth (YoY) | 55.52% | 112.46% |
| EPS Growth (3Y CAGR) | -7.71% | 165.07% |
Financial Strength
Current Ratio (MRQ)
SK hynix (SKHY) at 26.88 carries current ratio above its industry’s typical mid-range, while MKS (MKSI) at 1.19 runs in the tighter-liquidity quartile — different working-capital profiles, both worth examining.
MKSI
Semiconductors & Semiconductor Equipment industry group
1.19
- Max
- 10.33
- Q3
- 5.62
- Median
- 3.33
- Q1
- 2.35
- MKSI
- 1.19
- Min
- 1.03
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
Debt / Equity (MRQ)
SK hynix (SKHY) at 0.05 carries an industry-typical debt-to-equity mix, while MKS (MKSI) at 1.22 uses more debt funding than most peers.
MKSI
Semiconductors & Semiconductor Equipment industry group
1.22
- Max
- 1.46
- MKSI
- 1.22
- Q3
- 0.65
- Median
- 0.27
- Q1
- 0.04
- Min
- 0.00
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
Financial Strength Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Current Ratio (MRQ) | 1.19 | 26.88 |
| Debt / Equity (MRQ) | 1.22 | 0.05 |
| Net Debt / EBITDA | 2.67 | -0.46 |
Dividends
Dividend Yield (TTM)
MKS (MKSI) at 0.55% pays an industry-typical yield; SK hynix (SKHY) at 2,118.64% is above its entire peer range — the higher number, but one that calls for a look at payout sustainability before treating it as an advantage.
MKSI
Semiconductors & Semiconductor Equipment industry group
0.55%
- Max
- 1.37%
- Q3
- 0.65%
- MKSI
- 0.55%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
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%
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 MKS (MKSI) reports a payout of 11.48%, ranking against industry peers normally.
MKSI
Semiconductors & Semiconductor Equipment industry group
11.48%
- Max
- 49.64%
- Q3
- 21.71%
- MKSI
- 11.48%
- Median
- 0.00%
- Q1
- 0.00%
- Min
- 0.00%
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%
Dividend Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| Dividend Yield (TTM) | 0.55% | 2,118.64% |
| Dividend Payout Ratio (TTM) | 11.48% | 0.00% |
Valuation
P/E Ratio (TTM)
Both MKS (MKSI) at 22.75 and SK hynix (SKHY) at 8.12 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.
MKSI
Semiconductors & Semiconductor Equipment industry group
22.75
- Max
- 110.34
- Q3
- 66.81
- Median
- 37.02
- Q1
- 23.96
- MKSI
- 22.75
- Min
- 8.12
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
P/S Ratio (TTM)
Both MKS (MKSI) at 2.72 and SK hynix (SKHY) at 0.00 fetch a relatively low price per dollar of sales, landing in the cheaper P/S ratio quartile of their industries.
MKSI
Semiconductors & Semiconductor Equipment industry group
2.72
- Max
- 21.42
- Q3
- 12.27
- Median
- 5.76
- Q1
- 2.73
- MKSI
- 2.72
- Min
- 0.00
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
P/B Ratio (MRQ)
On P/B ratio, both MKS (MKSI) at 3.96 and SK hynix (SKHY) at 3.95 are valued close to their industries’ norm against book — neither stands out from peers.
MKSI
Semiconductors & Semiconductor Equipment industry group
3.96
- Max
- 14.06
- Q3
- 7.44
- Median
- 4.29
- MKSI
- 3.96
- Q1
- 2.30
- Min
- 0.20
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
Valuation Metrics
| Metric | MKSI | SKHY |
|---|---|---|
| P/E Ratio (TTM) | 22.75 | 8.12 |
| P/S Ratio (TTM) | 2.72 | 0.00 |
| P/B Ratio (MRQ) | 3.96 | 3.95 |
| Free Cash Flow Yield (TTM) | 4.02% | -- |