RMBS vs. AXTI
RMBS (Rambus Inc.) and AXTI (AXT, Inc.) are both stocks. Both are in the Technology sector — RMBS in Semiconductors, AXTI in Semiconductor Equipment & Materials. Over the past 10 years, RMBS returned 24.62%/yr vs 32.89%/yr for AXTI. At a 0.32 correlation, their price movements are largely independent.
Performance
RMBS vs. AXTI - Performance Comparison
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Returns By Period
In the year-to-date period, RMBS achieves a 21.99% return, which is significantly lower than AXTI's 249.91% return. Over the past 10 years, RMBS has underperformed AXTI with an annualized return of 24.62%, while AXTI has yielded a comparatively higher 32.89% annualized return.
RMBS
- 1D
- -1.78%
- 1M
- -23.51%
- 6M
- 20.05%
- YTD
- 21.99%
- 1Y
- 74.99%
- 3Y*
- 22.39%
- 5Y*
- 36.96%
- 10Y*
- 24.62%
AXTI
- 1D
- -8.54%
- 1M
- -41.13%
- 6M
- 148.85%
- YTD
- 249.91%
- 1Y
- 2,500.45%
- 3Y*
- 172.09%
- 5Y*
- 40.63%
- 10Y*
- 32.89%
RMBS vs. AXTI - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
RMBS Rambus Inc. | 21.99% | 73.84% | -22.55% | 90.54% | 21.88% | 68.33% | 26.75% | 79.60% | -46.06% | 3.27% |
AXTI AXT, Inc. | 249.91% | 653.46% | -9.58% | -45.21% | -50.28% | -7.94% | 120.00% | -0.00% | -50.00% | 81.25% |
Correlation
The correlation between RMBS and AXTI is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.27 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.35 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.42 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.43 |
Correlation (All Time) Calculated using the full available price history since May 21, 1998 | 0.32 |
The correlation between RMBS and AXTI shifts across timeframes, from 0.27 (1 year) to 0.43 (10 years), reflecting how their relationship changes across market environments.
Fundamentals
RMBS:
$12.12B
AXTI:
$2.65B
RMBS:
$2.10
AXTI:
-$0.30
RMBS:
17.02
AXTI:
28.19
RMBS:
8.83
AXTI:
11.24
RMBS:
$721.16M
AXTI:
$95.89M
RMBS:
$555.52M
AXTI:
$20.46M
RMBS:
$298.07M
AXTI:
-$7.63M
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Return for Risk
RMBS vs. AXTI — Risk / Return Rank
RMBS
AXTI
RMBS vs. AXTI - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Rambus Inc. (RMBS) and AXT, Inc. (AXTI). 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.
| RMBS | AXTI | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -16.56 | ||
| Sortino ratioReturn per unit of downside risk | -3.64 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.64 | -0.43 |
| Calmar ratioReturn relative to maximum drawdown | 1.95 | 41.21 | -39.26 |
| Martin ratioReturn relative to average drawdown | 4.49 | 131.50 | -127.02 |
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Drawdowns
RMBS vs. AXTI - Drawdown Comparison
The maximum RMBS drawdown since its inception was -97.16%, roughly equal to the maximum AXTI drawdown of -98.57%. Use the drawdown chart below to compare losses from any high point for RMBS and AXTI.
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Drawdown Indicators
| RMBS | AXTI | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -97.16% | -98.57% | +1.41% |
Max Drawdown (1Y)Largest decline over 1 year | -37.93% | -59.80% | +21.87% |
Max Drawdown (3Y)Largest decline over 3 years | -48.83% | -78.52% | +29.69% |
Max Drawdown (5Y)Largest decline over 5 years | -48.83% | -88.79% | +39.96% |
Max Drawdown (10Y)Largest decline over 10 years | -52.95% | -92.45% | +39.50% |
Current DrawdownCurrent decline from peak | -34.31% | -59.38% | +25.07% |
Average DrawdownAverage peak-to-trough decline | -74.77% | -82.18% | +7.41% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 16.45% | 18.70% | -2.25% |
Volatility
RMBS vs. AXTI - Volatility Comparison
The current volatility for Rambus Inc. (RMBS) is 25.62%, while AXT, Inc. (AXTI) has a volatility of 43.25%. This indicates that RMBS experiences smaller price fluctuations and is considered to be less risky than AXTI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| RMBS | AXTI | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 25.62% | 43.25% | -17.63% |
Volatility (6M)Calculated over the trailing 6-month period | 64.62% | 115.92% | -51.30% |
Volatility (1Y)Calculated over the trailing 1-year period | 79.41% | 141.47% | -62.06% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 56.31% | 97.58% | -41.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 46.86% | 83.53% | -36.67% |
Dividends
RMBS vs. AXTI - Dividend Comparison
Neither RMBS nor AXTI has paid dividends to shareholders.
Financials
RMBS vs. AXTI - Financials Comparison
This section allows you to compare key financial metrics between Rambus Inc. and AXT, 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
RMBS vs. AXTI - Profitability Comparison
RMBS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 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%.
AXTI - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, AXT, Inc. reported a gross profit of 7.98M and revenue of 26.92M. Therefore, the gross margin over that period was 29.6%.
RMBS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Rambus Inc. reported an operating income of 61.76M and revenue of 180.19M, resulting in an operating margin of 34.3%.
AXTI - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, AXT, Inc. reported an operating income of -1.59M and revenue of 26.92M, resulting in an operating margin of -5.9%.
RMBS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Rambus Inc. reported a net income of 59.86M and revenue of 180.19M, resulting in a net margin of 33.2%.
AXTI - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, AXT, Inc. reported a net income of -1.62M and revenue of 26.92M, resulting in a net margin of -6.0%.
Frequently Asked Questions
RMBS and AXTI have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AXTI has higher volatility (43.25%) compared to RMBS (25.62%). In terms of maximum drawdown, RMBS dropped -97.16% vs AXTI's -98.57%.
AXTI currently has the higher Sharpe Ratio (17.49 vs 0.93), 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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