- CUSIP
- 12811T514
- Issuer
- Calamos
- Inception Date
- Apr 17, 2026
- Region
- North America (U.S.)
- Category
- Options Trading
- Leveraged
- 1x (No leverage)
- Index Tracked
- No Index (Active)
- Domicile
- United States
- Asset Class
- Alternatives
- Assets Under Management
- $1B
Highlights
- Avg. Volume (1M)
- 88K
- Avg. Volume Value (1M)
- $8.89M
Share Price Chart
Loading charts...
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Performance
CBOX Performance Chart
Loading charts...
Compare this symbol against anything
Returns By Period
Calamos Tax-Aware Collateral ETF
- 1D
- 0.00%
- 1M
- 0.37%
- 6M
- —
- YTD
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- —
Benchmark (S&P 500 Index)
- 1D
- 0.70%
- 1M
- 0.09%
- 6M
- 7.94%
- YTD
- 9.41%
- 1Y
- 20.07%
- 3Y*
- 17.84%
- 5Y*
- 11.25%
- 10Y*
- 13.26%
- ALL TIME*
- 8.09%
CBOX Monthly Returns History
Based on dividend-adjusted daily data since Apr 17, 2026, CBOX's average daily return is +0.02%, while the average monthly return is +0.28%. At this rate, an investment would double in approximately 20.7 years.
Historically, 100% of months were positive and 0% were negative. The best month was Jul 2026 with a return of +0.4%, while the worst month was Apr 2026 at 0.1%. The longest winning streak lasted 4 consecutive months, and the longest losing streak was 0 months.
On a daily basis, CBOX closed higher 71% of trading days. The best single day was Jun 2, 2026 with a return of +3.0%, while the worst single day was Jun 3, 2026 at -2.9%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.13% | 0.31% | 0.32% | 0.35% | 1.12% |
Benchmark Metrics
Calamos Tax-Aware Collateral ETF has an annualized alpha of 3.10%, beta of 0.05, and R2 of 0.01 versus S&P 500 Index. Calculated based on daily prices since April 17, 2026.
- This ETF captured 4.91% of S&P 500 Index gains and tended to rise during its downturns (downside capture of -59.05%) - a profile typical of hedging or uncorrelated assets.
- Beta of 0.05 may look defensive, but with R2 of 0.01 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 0.01 means this ETF moves largely independently of S&P 500 Index - capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.
- Alpha
- 3.10%
- Beta
- 0.05
- R²
- 0.01
- Upside Capture
- 4.91%
- Downside Capture
- -59.05%
Expense Ratio
CBOX has an expense ratio of 0.14%, which is considered low.
Return for Risk
Risk / Return Metrics
The table below present risk-adjusted performance metrics for Calamos Tax-Aware Collateral ETF (CBOX) 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.
| CBOX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | — | 1.25 | — |
| Calmar ratioReturn relative to maximum drawdown | — | 2.00 | — |
| Martin ratioReturn relative to average drawdown | — | 8.49 | — |
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.
Loading charts...
Worst Drawdowns
The table below displays the maximum drawdowns of the Calamos Tax-Aware Collateral ETF. 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 Tax-Aware Collateral ETF was 2.90%, occurring on Jun 3, 2026. The portfolio has not yet recovered.
The current Calamos Tax-Aware Collateral ETF drawdown is 2.30%.
Drawdown | Fall | Recovery | Underwater | Related event |
|---|---|---|---|---|
-2.90%Jun 2026 | 1d | — | 2moJun 2026 - now | — |
-0.03%May 2026 | 1d | 1d | 1dMay 2026 - May 2026 | — |
-0.02%Apr 2026 | 1d | 3d | 3dApr 2026 - Apr 2026 | — |
-0.02%Apr 2026 | 1d | 2d | 2dApr 2026 - Apr 2026 | — |
-0.01%May 2026 | 1d | 1d | 1dMay 2026 - May 2026 | — |
Drawdown Indicators
| CBOX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -2.90% | -56.78% | +53.88% |
Max Drawdown (1Y)Largest decline over 1 year | — | -9.10% | — |
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 | -2.30% | -1.58% | -0.72% |
Average DrawdownAverage peak-to-trough decline | -1.47% | -10.70% | +9.23% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 2.14% | — |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
Loading charts...
Build a portfolio with CBOX
Add Calamos Tax-Aware Collateral ETF to a portfolio and analyze allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Analyzer with CBOX