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 21.34%/yr vs 32.40%/yr for AXTI. Their 0.32 correlation means their historical movements had little consistent relationship.
Performance
RMBS vs. AXTI - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, RMBS achieves a -0.94% return, which is significantly lower than AXTI's 269.60% return. Over the past 10 years, RMBS has underperformed AXTI with an annualized return of 21.34%, while AXTI has yielded a comparatively higher 32.40% annualized return.
RMBS
- 1D
- 1.62%
- 1M
- -19.39%
- 6M
- -20.03%
- YTD
- -0.94%
- 1Y
- 25.71%
- 3Y*
- 18.38%
- 5Y*
- 30.93%
- 10Y*
- 21.34%
- ALL TIME*
- 9.76%
AXTI
- 1D
- 28.74%
- 1M
- -7.07%
- 6M
- 225.94%
- YTD
- 269.60%
- 1Y
- 2,805.29%
- 3Y*
- 169.71%
- 5Y*
- 42.74%
- 10Y*
- 32.40%
- ALL TIME*
- 6.40%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
AXTI AXT, Inc. | $521.22M | $514.43M | $822.68M |
RMBS Rambus Inc. | $291.91M | $305.93M | $370.74M |
RMBS vs. AXTI - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
RMBS Rambus Inc. | -0.94% | 73.84% | -22.55% | 90.54% | 21.88% | 68.33% | 26.75% | 79.60% | -46.06% | 3.27% |
AXTI AXT, Inc. | 269.60% | 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 0.33, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.33 |
Correlation (3Y) Balances recent behavior with more history. | 0.37 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.42 |
Correlation (10Y) Provides a long-term view across more market conditions. | 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 0.32 (all time) to 0.43 (10 years), reflecting how their relationship changes across market environments.
Fundamentals
RMBS:
$9.87B
AXTI:
$3.07B
RMBS:
$2.19
AXTI:
$0.08
RMBS:
41.61
AXTI:
750.99
RMBS:
0.09
AXTI:
10.43
RMBS:
13.19
AXTI:
24.26
RMBS:
6.82
AXTI:
4.08
RMBS:
$756.33M
AXTI:
$125.51M
RMBS:
$591.98M
AXTI:
$40.39M
RMBS:
$331.39M
AXTI:
$17.91M
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
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 | -18.72 | ||
| Sortino ratioReturn per unit of downside risk | -4.34 | ||
| Omega ratioGain probability vs. loss probability | 1.12 | 1.64 | -0.52 |
| Calmar ratioReturn relative to maximum drawdown | 0.45 | 38.57 | -38.12 |
| Martin ratioReturn relative to average drawdown | 1.19 | 117.62 | -116.42 |
Loading charts...
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.
Loading charts...
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 | -51.48% | -73.75% | +22.27% |
Max Drawdown (3Y)Largest decline over 3 years | -51.48% | -78.52% | +27.04% |
Max Drawdown (5Y)Largest decline over 5 years | -51.48% | -88.79% | +37.31% |
Max Drawdown (10Y)Largest decline over 10 years | -52.95% | -92.45% | +39.50% |
Current DrawdownCurrent decline from peak | -46.66% | -57.09% | +10.43% |
Average DrawdownAverage peak-to-trough decline | -74.70% | -82.15% | +7.45% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 19.45% | 24.14% | -4.69% |
Volatility
RMBS vs. AXTI - Volatility Comparison
The current volatility for Rambus Inc. (RMBS) is 22.08%, while AXT, Inc. (AXTI) has a volatility of 57.24%. 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.
Loading charts...
Volatility by Period
| RMBS | AXTI | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 22.08% | 57.24% | -35.16% |
Volatility (6M)Calculated over the trailing 6-month period | 64.38% | 122.91% | -58.53% |
Volatility (1Y)Calculated over the trailing 1-year period | 80.06% | 149.65% | -69.59% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 56.88% | 100.30% | -43.42% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 47.18% | 85.23% | -38.05% |
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 Aug 2026, Rambus Inc. reported a gross profit of 165.41M and revenue of 207.39M. Therefore, the gross margin over that period was 79.8%.
AXTI - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, AXT, Inc. reported a gross profit of 21.37M and revenue of 47.59M. Therefore, the gross margin over that period was 44.9%.
RMBS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Rambus Inc. reported an operating income of 72.73M and revenue of 207.39M, resulting in an operating margin of 35.1%.
AXTI - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, AXT, Inc. reported an operating income of 10.42M and revenue of 47.59M, resulting in an operating margin of 21.9%.
RMBS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Rambus Inc. reported a net income of 67.61M and revenue of 207.39M, resulting in a net margin of 32.6%.
AXTI - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, AXT, Inc. reported a net income of 11.13M and revenue of 47.59M, resulting in a net margin of 23.4%.
Frequently Asked Questions
RMBS and AXTI 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.
AXTI has higher volatility (57.24%) compared to RMBS (22.08%). In terms of maximum drawdown, RMBS dropped -97.16% vs AXTI's -98.57%.
AXTI currently has the higher Sharpe Ratio (19.01 vs 0.29), 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.
Find the right allocation for RMBS and AXTI
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer