CLNE vs. ACES
CLNE (Clean Energy Fuels Corp.) is a stock, while ACES (ALPS Clean Energy ETF) is Alternative Energy Equities fund tracking the CIBC Atlas Clean Energy Index. Over the past 5 years, CLNE returned -30.82%/yr vs -12.89%/yr for ACES. A 0.56 correlation means they provide meaningful diversification when combined.
Performance
CLNE vs. ACES - Performance Comparison
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Returns By Period
In the year-to-date period, CLNE achieves a -17.62% return, which is significantly lower than ACES's 9.28% return.
CLNE
- 1D
- -3.35%
- 1M
- -15.61%
- YTD
- -17.62%
- 6M
- -20.28%
- 1Y
- -1.70%
- 3Y*
- -27.61%
- 5Y*
- -30.82%
- 10Y*
- -6.14%
ACES
- 1D
- -4.61%
- 1M
- -9.51%
- YTD
- 9.28%
- 6M
- 4.82%
- 1Y
- 42.77%
- 3Y*
- -5.11%
- 5Y*
- -12.89%
- 10Y*
- —
CLNE vs. ACES - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
CLNE Clean Energy Fuels Corp. | -17.62% | -16.33% | -34.46% | -26.35% | -15.17% | -22.01% | 235.90% | 36.05% | -53.01% |
ACES ALPS Clean Energy ETF | 9.28% | 25.44% | -26.71% | -20.04% | -28.44% | -19.44% | 140.33% | 51.70% | -9.81% |
Correlation
The correlation between CLNE and ACES is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.34 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.52 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.59 |
Correlation (All Time) Calculated using the full available price history since Jun 29, 2018 | 0.56 |
Over the past year, the correlation between CLNE and ACES has dropped to 0.34 - well below their long-term average of 0.56, suggesting their price drivers have been diverging.
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Return for Risk
CLNE vs. ACES — Risk / Return Rank
CLNE
ACES
CLNE vs. ACES - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Clean Energy Fuels Corp. (CLNE) and ALPS Clean Energy ETF (ACES). 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.
| CLNE | ACES | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.30 | ||
| Sortino ratioReturn per unit of downside risk | -1.44 | ||
| Omega ratioGain probability vs. loss probability | 1.04 | 1.22 | -0.18 |
| Calmar ratioReturn relative to maximum drawdown | -0.04 | 2.41 | -2.45 |
| Martin ratioReturn relative to average drawdown | -0.08 | 5.66 | -5.74 |
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Drawdowns
CLNE vs. ACES - Drawdown Comparison
The maximum CLNE drawdown since its inception was -95.48%, which is greater than ACES's maximum drawdown of -79.05%. Use the drawdown chart below to compare losses from any high point for CLNE and ACES.
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Drawdown Indicators
| CLNE | ACES | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -95.48% | -79.05% | -16.43% |
Max Drawdown (1Y)Largest decline over 1 year | -43.46% | -17.82% | -25.64% |
Max Drawdown (3Y)Largest decline over 3 years | -74.37% | -58.68% | -15.69% |
Max Drawdown (5Y)Largest decline over 5 years | -87.81% | -74.44% | -13.37% |
Max Drawdown (10Y)Largest decline over 10 years | -92.92% | — | — |
Current DrawdownCurrent decline from peak | -92.77% | -63.00% | -29.77% |
Average DrawdownAverage peak-to-trough decline | -66.53% | -38.99% | -27.54% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 21.94% | 7.58% | +14.36% |
Volatility
CLNE vs. ACES - Volatility Comparison
The current volatility for Clean Energy Fuels Corp. (CLNE) is 10.51%, while ALPS Clean Energy ETF (ACES) has a volatility of 14.00%. This indicates that CLNE experiences smaller price fluctuations and is considered to be less risky than ACES based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CLNE | ACES | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 10.51% | 14.00% | -3.49% |
Volatility (6M)Calculated over the trailing 6-month period | 32.76% | 25.21% | +7.55% |
Volatility (1Y)Calculated over the trailing 1-year period | 53.33% | 33.93% | +19.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 63.69% | 36.52% | +27.17% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 71.36% | 35.72% | +35.64% |
Dividends
CLNE vs. ACES - Dividend Comparison
CLNE has not paid dividends to shareholders, while ACES's dividend yield for the trailing twelve months is around 0.63%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|---|---|---|---|---|
ACES ALPS Clean Energy ETF | 0.63% | 0.70% | 1.10% | 1.44% | 1.08% | 0.71% | 0.56% | 1.79% | 0.34% |
CLNE Clean Energy Fuels Corp. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
CLNE and ACES have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ACES has higher volatility (14.00%) compared to CLNE (10.51%). In terms of maximum drawdown, CLNE dropped -95.48% vs ACES's -79.05%.
ACES currently has the higher Sharpe Ratio (1.27 vs -0.03), 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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