UMC vs. RMBS
UMC (United Microelectronics Corporation) and RMBS (Rambus Inc.) are both stocks. Both operate in the Semiconductors industry within the Technology sector. Over the past 10 years, UMC returned 36.17%/yr vs 26.97%/yr for RMBS. At a 0.39 correlation, their price movements are largely independent.
Performance
UMC vs. RMBS - Performance Comparison
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Returns By Period
In the year-to-date period, UMC achieves a 233.33% return, which is significantly higher than RMBS's 39.53% return. Over the past 10 years, UMC has outperformed RMBS with an annualized return of 36.17%, while RMBS has yielded a comparatively lower 26.97% annualized return.
UMC
- 1D
- -4.73%
- 1M
- 43.80%
- YTD
- 233.33%
- 6M
- 228.73%
- 1Y
- 242.75%
- 3Y*
- 55.11%
- 5Y*
- 29.56%
- 10Y*
- 36.17%
RMBS
- 1D
- -8.65%
- 1M
- -10.33%
- YTD
- 39.53%
- 6M
- 36.12%
- 1Y
- 113.68%
- 3Y*
- 29.33%
- 5Y*
- 40.20%
- 10Y*
- 26.97%
UMC vs. RMBS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
UMC United Microelectronics Corporation | 233.33% | 28.65% | -19.01% | 39.20% | -40.32% | 43.16% | 230.69% | 56.10% | -21.85% | 39.99% |
RMBS Rambus Inc. | 39.53% | 73.84% | -22.55% | 90.54% | 21.88% | 68.33% | 26.75% | 79.60% | -46.06% | 3.27% |
Correlation
The correlation between UMC and RMBS is 0.33, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.33 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.44 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.50 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.43 |
Correlation (All Time) Calculated using the full available price history since Sep 19, 2000 | 0.39 |
The correlation between UMC and RMBS shifts across timeframes, from 0.33 (1 year) to 0.50 (5 years), reflecting how their relationship changes across market environments.
Fundamentals
UMC:
$13.19B
RMBS:
$14.07B
UMC:
NT$24.95
RMBS:
$2.11
UMC:
33.20
RMBS:
60.90
UMC:
6.91
RMBS:
19.42
UMC:
1.03
RMBS:
10.10
UMC:
NT$240.73B
RMBS:
$721.16M
UMC:
NT$71.28B
RMBS:
$555.52M
UMC:
NT$119.50B
RMBS:
$298.07M
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Return for Risk
UMC vs. RMBS — Risk / Return Rank
UMC
RMBS
UMC vs. RMBS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for United Microelectronics Corporation (UMC) and Rambus Inc. (RMBS). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| UMC | RMBS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +3.05 | ||
| Sortino ratioReturn per unit of downside risk | +3.12 | ||
| Omega ratioGain probability vs. loss probability | 1.65 | 1.28 | +0.37 |
| Calmar ratioReturn relative to maximum drawdown | 7.88 | 3.12 | +4.77 |
| Martin ratioReturn relative to average drawdown | 19.75 | 7.63 | +12.12 |
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Drawdowns
UMC vs. RMBS - Drawdown Comparison
The maximum UMC drawdown since its inception was -72.52%, smaller than the maximum RMBS drawdown of -97.16%. Use the drawdown chart below to compare losses from any high point for UMC and RMBS.
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Drawdown Indicators
| UMC | RMBS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -72.52% | -97.16% | +24.64% |
Max Drawdown (1Y)Largest decline over 1 year | -31.01% | -36.69% | +5.68% |
Max Drawdown (3Y)Largest decline over 3 years | -36.00% | -48.83% | +12.83% |
Max Drawdown (5Y)Largest decline over 5 years | -54.30% | -48.83% | -5.47% |
Max Drawdown (10Y)Largest decline over 10 years | -54.30% | -52.95% | -1.35% |
Current DrawdownCurrent decline from peak | -4.73% | -24.87% | +20.14% |
Average DrawdownAverage peak-to-trough decline | -42.50% | -74.84% | +32.34% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 12.35% | 14.96% | -2.61% |
Volatility
UMC vs. RMBS - Volatility Comparison
United Microelectronics Corporation (UMC) and Rambus Inc. (RMBS) have volatilities of 28.63% and 29.44%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| UMC | RMBS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 28.63% | 29.44% | -0.81% |
Volatility (6M)Calculated over the trailing 6-month period | 48.45% | 62.64% | -14.19% |
Volatility (1Y)Calculated over the trailing 1-year period | 53.96% | 77.19% | -23.23% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 40.87% | 55.71% | -14.84% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 40.23% | 46.52% | -6.29% |
Dividends
UMC vs. RMBS - Dividend Comparison
UMC's dividend yield for the trailing twelve months is around 1.82%, while RMBS has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
RMBS Rambus Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
UMC United Microelectronics Corporation | 1.82% | 6.06% | 7.14% | 6.93% | 7.92% | 2.44% | 1.62% | 3.51% | 6.59% | 2.41% | 3.61% | 3.15% |
Financials
UMC vs. RMBS - Financials Comparison
This section allows you to compare key financial metrics between United Microelectronics Corporation and Rambus Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
UMC vs. RMBS - Profitability Comparison
UMC - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, United Microelectronics Corporation reported a gross profit of 17.82B and revenue of 61.04B. Therefore, the gross margin over that period was 29.2%.
RMBS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Rambus Inc. reported a gross profit of 143.66M and revenue of 180.19M. Therefore, the gross margin over that period was 79.7%.
UMC - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, United Microelectronics Corporation reported an operating income of 11.22B and revenue of 61.04B, resulting in an operating margin of 18.4%.
RMBS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Rambus Inc. reported an operating income of 61.76M and revenue of 180.19M, resulting in an operating margin of 34.3%.
UMC - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, United Microelectronics Corporation reported a net income of 16.17B and revenue of 61.04B, resulting in a net margin of 26.5%.
RMBS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Rambus Inc. reported a net income of 59.86M and revenue of 180.19M, resulting in a net margin of 33.2%.
Frequently Asked Questions
UMC and RMBS have a correlation of 0.33, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RMBS has higher volatility (29.44%) compared to UMC (28.63%). In terms of maximum drawdown, UMC dropped -72.52% vs RMBS's -97.16%.
UMC currently has the higher Sharpe Ratio (4.53 vs 1.48), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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