- CUSIP
- 12811T761
- Issuer
- Calamos
- Inception Date
- Mar 3, 2025
- Region
- North America (United States)
- Category
- Defined Outcome
- Leveraged
- 1x (No leverage)
- Index Tracked
- S&P 500 Index Price Return
- Distribution Policy
- Accumulating
- Asset Class
- Alternatives
- Assets Under Management
- $31M
Share Price Chart
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Performance
CPSR Performance Chart
Calamos S&P 500 Structured Alt Protection ETF - March (CPSR) is up 2.5% since the beginning of the year. CPSR is currently trading at $26 per share.
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Returns By Period
Calamos S&P 500 Structured Alt Protection ETF - March (CPSR) has returned 2.50% so far this year and 7.21% over the past 12 months.
Calamos S&P 500 Structured Alt Protection ETF - March
- 1D
- 0.16%
- 1M
- 0.14%
- YTD
- 2.50%
- 6M
- 2.72%
- 1Y
- 7.21%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
Benchmark (S&P 500 Index)
- 1D
- 0.00%
- 1M
- -0.71%
- YTD
- 8.39%
- 6M
- 8.57%
- 1Y
- 24.33%
- 3Y*
- 18.94%
- 5Y*
- 12.24%
- 10Y*
- 13.54%
CPSR Monthly Returns History
Based on dividend-adjusted daily data since Mar 3, 2025, CPSR's average daily return is +0.02%, while the average monthly return is +0.49%. At this rate, an investment would double in approximately 11.8 years.
Historically, 88% of months were positive and 13% were negative. The best month was Apr 2026 with a return of +1.5%, while the worst month was Mar 2025 at -1.3%. The longest winning streak lasted 11 consecutive months, and the longest losing streak was 1 months.
On a daily basis, CPSR closed higher 57% of trading days. The best single day was Mar 17, 2025 with a return of +2.1%, while the worst single day was Mar 18, 2025 at -2.1%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.54% | 0.59% | -0.82% | 1.54% | 0.57% | 0.08% | 2.50% | ||||||
| 2025 | -1.31% | 1.03% | 0.74% | 1.16% | 0.67% | 0.74% | 0.76% | 0.44% | 0.41% | 0.67% | 5.42% |
Benchmark Metrics
Calamos S&P 500 Structured Alt Protection ETF - March has an annualized alpha of 3.23%, beta of 0.15, and R2 of 0.49 versus S&P 500 Index. Calculated based on daily prices since March 03, 2025.
- This ETF captured 16.94% of S&P 500 Index gains and tended to rise during its downturns (downside capture of -1.66%) - a profile typical of hedging or uncorrelated assets.
- Beta of 0.15 may look defensive, but with R2 of 0.49 this ETF is largely uncorrelated with S&P 500 Index - low beta reflects independence, not downside protection. See the Volatility section for a true picture of this ETF's risk.
- R2 of 0.49 means the benchmark explains less than half of this ETF's behavior - treat beta with caution or consider switching to a more representative benchmark.
- Alpha
- 3.23%
- Beta
- 0.15
- R²
- 0.49
- Upside Capture
- 16.94%
- Downside Capture
- -1.66%
Expense Ratio
CPSR has an expense ratio of 0.69%, placing it in the medium range.
Return for Risk
Risk / Return Rank
CPSR ranks 96 for risk / return — in the top 96% of ETFs on our site. This means strong returns relative to risk — exactly what professional investors look for. Well-suited for investors who want to maximize return per unit of risk.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - March (CPSR) and compare them to S&P 500 Index.
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.
| CPSR | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.00 | ||
| Sortino ratioReturn per unit of downside risk | +3.93 | ||
| Omega ratioGain probability vs. loss probability | 1.89 | 1.35 | +0.54 |
| Calmar ratioReturn relative to maximum drawdown | 6.51 | 2.66 | +3.85 |
| Martin ratioReturn relative to average drawdown | 31.18 | 11.86 | +19.32 |
Dividends
Dividend History
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the Calamos S&P 500 Structured Alt Protection ETF - March. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Calamos S&P 500 Structured Alt Protection ETF - March was 3.40%, occurring on Apr 8, 2025. Recovery took 42 trading sessions.
The current Calamos S&P 500 Structured Alt Protection ETF - March drawdown is 0.09%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
2025 selloff2025 | -3.40%Apr 2025 | 21d | 2mo 2d | 2mo 23dMar 2025 - Jun 2025 |
2025 selloff2025 | -1.61%Mar 2025 | 10d | 4d | 14dMar 2025 - Mar 2025 |
2026 pullback2026 | -1.12%Mar 2026 | 28d | 14d | 1mo 12dMar 2026 - Apr 2026 |
2025 pullback2025 | -0.59%Nov 2025 | 8d | 5d | 13dNov 2025 - Nov 2025 |
2026 pullback2026 | -0.41%Jun 2026 | 7d | 5d | 12dJun 2026 - Jun 2026 |
Drawdown Indicators
| CPSR | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -3.40% | -56.78% | +53.38% |
Max Drawdown (1Y)Largest decline over 1 year | -1.12% | -9.10% | +7.98% |
Max Drawdown (3Y)Largest decline over 3 years | — | -18.90% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -25.43% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.92% | — |
Current DrawdownCurrent decline from peak | -0.09% | -2.49% | +2.40% |
Average DrawdownAverage peak-to-trough decline | -0.39% | -10.72% | +10.33% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.23% | 2.03% | -1.80% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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