ESK vs. CBXO

Last updated Jun 23, 2026

ESK (REX-Osprey ETH + Staking ETF) and CBXO (Calamos Bitcoin 90 Series Structured Alt Protection ETF - October) are both exchange-traded funds - ESK is a Cryptocurrency fund actively managed by REX Shares, while CBXO is a Defined Outcome fund actively managed by Calamos. Both are actively managed. A 0.80 correlation means they provide meaningful diversification when combined. ESK charges 0.75%/yr vs 0.69%/yr for CBXO.

Performance

ESK vs. CBXO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX-Osprey ETH + Staking ETF (ESK) and Calamos Bitcoin 90 Series Structured Alt Protection ETF - October (CBXO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ESK achieves a -44.38% return, which is significantly lower than CBXO's -3.74% return.

ESK

• 1D: 0.00%
• 1M: -20.83%
• YTD: -44.38%
• 6M: -44.49%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CBXO

• 1D: 0.02%
• 1M: -0.38%
• YTD: -3.74%
• 6M: -4.04%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ESK vs. CBXO - Yearly Performance Comparison

	2026 (YTD)	2025
ESK REX-Osprey ETH + Staking ETF	-44.38%	-36.05%
CBXO Calamos Bitcoin 90 Series Structured Alt Protection ETF - October	-3.74%	-8.05%

Correlation

The correlation between ESK and CBXO is 0.80, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 7, 2025	0.80

Return for Risk

ESK vs. CBXO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX-Osprey ETH + Staking ETF (ESK) and Calamos Bitcoin 90 Series Structured Alt Protection ETF - October (CBXO). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Drawdowns

ESK vs. CBXO - Drawdown Comparison

The maximum ESK drawdown since its inception was -66.25%, which is greater than CBXO's maximum drawdown of -11.51%. Use the drawdown chart below to compare losses from any high point for ESK and CBXO.

Drawdown Indicators

	ESK	CBXO	Difference
Max Drawdown Largest peak-to-trough decline	-66.25%	-11.51%	-54.74%
Current Drawdown Current decline from peak	-64.43%	-11.49%	-52.94%
Average Drawdown Average peak-to-trough decline	-41.53%	-8.65%	-32.88%

Volatility

Volatility by Period

	ESK	CBXO	Difference
Volatility (1Y) Calculated over the trailing 1-year period	66.82%	6.96%	+59.86%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	66.82%	6.96%	+59.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	66.82%	6.96%	+59.86%

ESK vs. CBXO - Expense Ratio Comparison

ESK has a 0.75% expense ratio, which is higher than CBXO's 0.69% expense ratio.

Dividends

ESK vs. CBXO - Dividend Comparison

ESK's dividend yield for the trailing twelve months is around 1.06%, more than CBXO's 0.53% yield.

Position	TTM	2025
CBXO Calamos Bitcoin 90 Series Structured Alt Protection ETF - October	0.53%	0.51%
ESK REX-Osprey ETH + Staking ETF	1.06%	0.30%

Frequently Asked Questions

Can I hold both ESK and CBXO in my portfolio?

ESK and CBXO have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, ESK or CBXO?

On fees, CBXO is cheaper at 0.69% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, ESK or CBXO?

CBXO is cheaper with a 0.69% expense ratio, compared with 0.75% for ESK.

Which ETF pays a higher dividend yield, ESK or CBXO?

ESK has the higher dividend yield at 1.06%, compared with 0.53% for CBXO.

What is the main difference between ESK and CBXO?

ESK is categorized as Cryptocurrency, while CBXO is Defined Outcome. They also come from different issuers: REX Shares and Calamos. Their fees differ too: 0.75% for ESK and 0.69% for CBXO.