CPSA vs. USO
CPSA (Calamos S&P 500 Structured Alt Protection ETF - August) and USO (United States Oil Fund LP) are both exchange-traded funds - CPSA is a Defined Outcome fund tracking the MerQube Cap Protect US Lrg Cap PR Index - Aug, while USO is a Oil & Gas fund tracking the Front Month Light Sweet Crude Oil. Both are passively managed. Over the past year, CPSA returned 8.10% vs 101.55% for USO. At a correlation of -0.08, they often move in opposite directions. CPSA charges 0.69%/yr vs 0.86%/yr for USO.
Performance
CPSA vs. USO - Performance Comparison
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Returns By Period
In the year-to-date period, CPSA achieves a 2.81% return, which is significantly lower than USO's 103.67% return.
CPSA
- 1D
- 0.00%
- 1M
- 0.89%
- YTD
- 2.81%
- 6M
- 3.15%
- 1Y
- 8.10%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
USO
- 1D
- 2.62%
- 1M
- -4.57%
- YTD
- 103.67%
- 6M
- 99.35%
- 1Y
- 101.55%
- 3Y*
- 29.98%
- 5Y*
- 24.41%
- 10Y*
- 4.07%
CPSA vs. USO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
CPSA Calamos S&P 500 Structured Alt Protection ETF - August | 2.81% | 7.39% | 3.51% |
USO United States Oil Fund LP | 103.67% | -8.46% | -0.97% |
Correlation
The correlation between CPSA and USO is -0.30, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.30 |
Correlation (All Time) Calculated using the full available price history since Aug 2, 2024 | -0.08 |
Over the past year, the inverse relationship between CPSA and USO has strengthened: their correlation has moved from -0.08 to -0.30, meaning they now move in opposite directions more often than their long-term average.
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Return for Risk
CPSA vs. USO — Risk / Return Rank
CPSA
USO
CPSA vs. USO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - August (CPSA) and United States Oil Fund LP (USO). 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.
| CPSA | USO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.22 | ||
| Sortino ratioReturn per unit of downside risk | +2.92 | ||
| Omega ratioGain probability vs. loss probability | 1.78 | 1.38 | +0.40 |
| Calmar ratioReturn relative to maximum drawdown | 5.52 | 5.01 | +0.51 |
| Martin ratioReturn relative to average drawdown | 31.36 | 9.42 | +21.94 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| CPSA | USO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 3.53 | 2.31 | +1.22 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.68 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.10 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.84 | -0.18 | +2.01 |
Drawdowns
CPSA vs. USO - Drawdown Comparison
The maximum CPSA drawdown since its inception was -4.72%, smaller than the maximum USO drawdown of -98.19%. Use the drawdown chart below to compare losses from any high point for CPSA and USO.
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Drawdown Indicators
| CPSA | USO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -4.72% | -98.19% | +93.47% |
Max Drawdown (1Y)Largest decline over 1 year | -1.47% | -20.39% | +18.92% |
Max Drawdown (3Y)Largest decline over 3 years | — | -26.05% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -36.23% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -86.75% | — |
Current DrawdownCurrent decline from peak | 0.00% | -85.01% | +85.01% |
Average DrawdownAverage peak-to-trough decline | -0.38% | -75.30% | +74.92% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.26% | 10.82% | -10.56% |
Volatility
CPSA vs. USO - Volatility Comparison
The current volatility for Calamos S&P 500 Structured Alt Protection ETF - August (CPSA) is 0.41%, while United States Oil Fund LP (USO) has a volatility of 14.87%. This indicates that CPSA experiences smaller price fluctuations and is considered to be less risky than USO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CPSA | USO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.41% | 14.87% | -14.46% |
Volatility (6M)Calculated over the trailing 6-month period | 1.73% | 38.23% | -36.50% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.33% | 44.20% | -41.87% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.14% | 36.06% | -31.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.14% | 39.00% | -34.86% |
CPSA vs. USO - Expense Ratio Comparison
CPSA has a 0.69% expense ratio, which is lower than USO's 0.86% expense ratio.
Dividends
CPSA vs. USO - Dividend Comparison
Neither CPSA nor USO has paid dividends to shareholders.
Frequently Asked Questions
CPSA and USO have a correlation of -0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
USO has higher volatility (14.87%) compared to CPSA (0.41%). In terms of maximum drawdown, CPSA dropped -4.72% vs USO's -98.19%.
On 1-year performance, USO leads with 101.55% vs 8.10% for CPSA. On fees, CPSA is cheaper at 0.69% per year. On volatility, CPSA has been the lower-risk option at 0.41%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, USO has performed better with a 101.55% return vs 8.10%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
CPSA is cheaper with a 0.69% expense ratio, compared with 0.86% for USO.
CPSA and USO have nearly identical dividend yields, around 0.00%.
CPSA is categorized as Defined Outcome, while USO is Oil & Gas. CPSA tracks MerQube Cap Protect US Lrg Cap PR Index - Aug, while USO tracks Front Month Light Sweet Crude Oil. They also come from different issuers: Calamos and USCF. Their fees differ too: 0.69% for CPSA and 0.86% for USO.
CPSA currently has the higher Sharpe Ratio (3.53 vs 2.31), 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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