OCTB vs. CBXO

Last updated Jun 4, 2026

OCTB (Aptus October Buffer ETF) and CBXO (Calamos Bitcoin 90 Series Structured Alt Protection ETF - October) are both Defined Outcome funds. Both are actively managed. At a 0.42 correlation, their price movements are largely independent. OCTB charges 0.25%/yr vs 0.69%/yr for CBXO.

Performance

OCTB vs. CBXO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Aptus October Buffer ETF (OCTB) 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, OCTB achieves a 6.18% return, which is significantly higher than CBXO's -3.67% return.

OCTB

• 1D: -0.17%
• 1M: 2.41%
• YTD: 6.18%
• 6M: 6.75%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CBXO

• 1D: -0.03%
• 1M: -0.92%
• YTD: -3.67%
• 6M: -5.18%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

OCTB vs. CBXO - Yearly Performance Comparison

	2026 (YTD)	2025
OCTB Aptus October Buffer ETF	6.18%	2.37%
CBXO Calamos Bitcoin 90 Series Structured Alt Protection ETF - October	-3.67%	-6.21%

Correlation

The correlation between OCTB and CBXO is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 15, 2025	0.42

Return for Risk

OCTB vs. CBXO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Aptus October Buffer ETF (OCTB) 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.

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

Sharpe Ratios by Period

	OCTB	CBXO	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	1.97	-2.36	+4.33

Drawdowns

OCTB vs. CBXO - Drawdown Comparison

The maximum OCTB drawdown since its inception was -4.79%, smaller than the maximum CBXO drawdown of -11.40%. Use the drawdown chart below to compare losses from any high point for OCTB and CBXO.

Drawdown Indicators

	OCTB	CBXO	Difference
Max Drawdown Largest peak-to-trough decline	-4.79%	-11.40%	+6.61%
Current Drawdown Current decline from peak	-0.17%	-11.40%	+11.23%
Average Drawdown Average peak-to-trough decline	-0.70%	-8.46%	+7.76%

Volatility

Volatility by Period

	OCTB	CBXO	Difference
Volatility (1Y) Calculated over the trailing 1-year period	7.20%	7.23%	-0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.20%	7.23%	-0.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.20%	7.23%	-0.03%

OCTB vs. CBXO - Expense Ratio Comparison

OCTB has a 0.25% expense ratio, which is lower than CBXO's 0.69% expense ratio.

Dividends

OCTB vs. CBXO - Dividend Comparison

OCTB has not paid dividends to shareholders, while CBXO's dividend yield for the trailing twelve months is around 0.53%.

Position	TTM	2025
CBXO Calamos Bitcoin 90 Series Structured Alt Protection ETF - October	0.53%	0.51%
OCTB Aptus October Buffer ETF	0.00%	0.00%

Frequently Asked Questions

Can I hold both OCTB and CBXO in my portfolio?

OCTB and CBXO have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, OCTB or CBXO?

On fees, OCTB is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, OCTB or CBXO?

OCTB is cheaper with a 0.25% expense ratio, compared with 0.69% for CBXO.

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

CBXO has the higher dividend yield at 0.53%, compared with 0.00% for OCTB.

What is the main difference between OCTB and CBXO?

They also come from different issuers: Aptus Capital Advisors and Calamos. Their fees differ too: 0.25% for OCTB and 0.69% for CBXO.