CBOA vs. MSTZ

Last updated Jul 14, 2026

CBOA (Calamos Bitcoin Structured Alt Protection ETF - April) and MSTZ (T-REX 2X Inverse MSTR Daily Target ETF) are both exchange-traded funds - CBOA is a Defined Outcome fund tracking the CBOE Bitcoin US ETF Index, while MSTZ is a Inverse Equities fund actively managed by REX. CBOA is passively managed, while MSTZ is actively managed. Over the past year, CBOA returned -6.77% vs 282.56% for MSTZ. At a correlation of -0.74, they often move in opposite directions. CBOA charges 0.69%/yr vs 1.05%/yr for MSTZ.

Performance

CBOA vs. MSTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calamos Bitcoin Structured Alt Protection ETF - April (CBOA) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CBOA achieves a -6.47% return, which is significantly higher than MSTZ's -23.27% return.

CBOA

• 1D: -0.33%
• 1M: -0.29%
• 6M: -7.44%
• YTD: -6.47%
• 1Y: -6.77%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MSTZ

• 1D: 5.07%
• 1M: 46.38%
• 6M: -9.68%
• YTD: -23.27%
• 1Y: 282.56%
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

CBOA vs. MSTZ - Yearly Performance Comparison

	2026 (YTD)	2025
CBOA Calamos Bitcoin Structured Alt Protection ETF - April	-6.47%	5.22%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	-23.27%	32.33%

Correlation

The correlation between CBOA and MSTZ is -0.79, 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	-0.79
Correlation (All Time) Calculated using the full available price history since Apr 7, 2025	-0.74

The correlation between CBOA and MSTZ has been stable across timeframes, ranging from -0.79 to -0.74 - a consistent structural relationship.

Return for Risk

CBOA vs. MSTZ — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CBOA

CBOA Risk / Return Rank: 2
CBOA Sharpe Ratio Rank: 0
CBOA Sortino Ratio Rank: 2
CBOA Omega Ratio Rank: 1
CBOA Calmar Ratio Rank: 3
CBOA Martin Ratio Rank: 2

MSTZ

MSTZ Risk / Return Rank: 68
MSTZ Sharpe Ratio Rank: 76
MSTZ Sortino Ratio Rank: 67
MSTZ Omega Ratio Rank: 68
MSTZ Calmar Ratio Rank: 80
MSTZ Martin Ratio Rank: 49

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CBOA vs. MSTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos Bitcoin Structured Alt Protection ETF - April (CBOA) and T-REX 2X Inverse MSTR Daily Target ETF (MSTZ). 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.

	CBOA	MSTZ	Difference
Sharpe ratio: Return per unit of total volatility	-1.25	1.92	-3.17
Sortino ratio: Return per unit of downside risk	-1.60	2.45	-4.05
Omega ratio: Gain probability vs. loss probability	0.79	1.32	-0.52
Calmar ratio: Return relative to maximum drawdown	-0.76	3.35	-4.11
Martin ratio: Return relative to average drawdown	-1.40	6.53	-7.93

CBOA vs. MSTZ - Sharpe Ratio Comparison

The current CBOA Sharpe Ratio is -1.25, which is lower than the MSTZ Sharpe Ratio of 1.92. The chart below compares the historical Sharpe Ratios of CBOA and MSTZ, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

CBOA vs. MSTZ - Drawdown Comparison

The maximum CBOA drawdown since its inception was -8.92%, smaller than the maximum MSTZ drawdown of -99.38%. Use the drawdown chart below to compare losses from any high point for CBOA and MSTZ.

Drawdown Indicators

	CBOA	MSTZ	Difference
Max Drawdown Largest peak-to-trough decline	-8.92%	-99.38%	+90.46%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-84.89%	+75.97%
Current Drawdown Current decline from peak	-8.31%	-97.39%	+89.08%
Average Drawdown Average peak-to-trough decline	-2.86%	-94.53%	+91.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.85%	43.51%	-38.66%

Volatility

CBOA vs. MSTZ - Volatility Comparison

The current volatility for Calamos Bitcoin Structured Alt Protection ETF - April (CBOA) is 1.14%, while T-REX 2X Inverse MSTR Daily Target ETF (MSTZ) has a volatility of 56.56%. This indicates that CBOA experiences smaller price fluctuations and is considered to be less risky than MSTZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CBOA	MSTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.14%	56.56%	-55.42%
Volatility (6M) Calculated over the trailing 6-month period	4.48%	135.11%	-130.63%
Volatility (1Y) Calculated over the trailing 1-year period	5.47%	148.53%	-143.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.08%	171.02%	-165.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.08%	171.02%	-165.94%

CBOA vs. MSTZ - Expense Ratio Comparison

CBOA has a 0.69% expense ratio, which is lower than MSTZ's 1.05% expense ratio.

Dividends

CBOA vs. MSTZ - Dividend Comparison

CBOA's dividend yield for the trailing twelve months is around 2.39%, while MSTZ has not paid dividends to shareholders.

Position	TTM	2025
CBOA Calamos Bitcoin Structured Alt Protection ETF - April	2.39%	2.24%
MSTZ T-REX 2X Inverse MSTR Daily Target ETF	0.00%	0.00%

Frequently Asked Questions

Can I hold both CBOA and MSTZ in my portfolio?

CBOA and MSTZ have a correlation of -0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CBOA or MSTZ?

MSTZ has higher volatility (56.56%) compared to CBOA (1.14%). In terms of maximum drawdown, CBOA dropped -8.92% vs MSTZ's -99.38%.

Which ETF is better, CBOA or MSTZ?

On 1-year performance, MSTZ leads with 282.56% vs -6.77% for CBOA. On fees, CBOA is cheaper at 0.69% per year. On volatility, CBOA has been the lower-risk option at 1.14%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CBOA or MSTZ?

Over the 1-year period, MSTZ has performed better with a 282.56% return vs -6.77%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CBOA or MSTZ?

CBOA is cheaper with a 0.69% expense ratio, compared with 1.05% for MSTZ.

Which ETF pays a higher dividend yield, CBOA or MSTZ?

CBOA has the higher dividend yield at 2.39%, compared with 0.00% for MSTZ.

What is the main difference between CBOA and MSTZ?

CBOA is categorized as Defined Outcome, while MSTZ is Inverse Equities. They also come from different issuers: Calamos and REX. Their fees differ too: 0.69% for CBOA and 1.05% for MSTZ.

Which has better risk-adjusted returns?

MSTZ currently has the higher Sharpe Ratio (1.92 vs -1.25), 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.