OCTB vs. CBOO

Last updated Jun 4, 2026

OCTB (Aptus October Buffer ETF) and CBOO (Calamos Bitcoin Structured Alt Protection ETF - October) are both Defined Outcome funds. Both are actively managed. At a 0.33 correlation, their price movements are largely independent. OCTB charges 0.25%/yr vs 0.69%/yr for CBOO.

Performance

OCTB vs. CBOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Aptus October Buffer ETF (OCTB) and Calamos Bitcoin Structured Alt Protection ETF - October (CBOO). 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 CBOO's -0.04% return.

OCTB

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

CBOO

• 1D: -0.04%
• 1M: -0.00%
• YTD: -0.04%
• 6M: -0.22%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

OCTB vs. CBOO - Yearly Performance Comparison

	2026 (YTD)	2025
OCTB Aptus October Buffer ETF	6.18%	2.37%
CBOO Calamos Bitcoin Structured Alt Protection ETF - October	-0.04%	-1.17%

Correlation

The correlation between OCTB and CBOO is 0.33, 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	0.33

Return for Risk

OCTB vs. CBOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Aptus October Buffer ETF (OCTB) and Calamos Bitcoin Structured Alt Protection ETF - October (CBOO). 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	CBOO	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	1.97	-1.19	+3.16

Drawdowns

OCTB vs. CBOO - Drawdown Comparison

The maximum OCTB drawdown since its inception was -4.79%, which is greater than CBOO's maximum drawdown of -2.34%. Use the drawdown chart below to compare losses from any high point for OCTB and CBOO.

Drawdown Indicators

	OCTB	CBOO	Difference
Max Drawdown Largest peak-to-trough decline	-4.79%	-2.34%	-2.45%
Current Drawdown Current decline from peak	-0.17%	-1.72%	+1.55%
Average Drawdown Average peak-to-trough decline	-0.70%	-1.61%	+0.91%

Volatility

Volatility by Period

	OCTB	CBOO	Difference
Volatility (1Y) Calculated over the trailing 1-year period	7.20%	2.14%	+5.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.20%	2.14%	+5.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.20%	2.14%	+5.06%

OCTB vs. CBOO - Expense Ratio Comparison

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

Dividends

OCTB vs. CBOO - Dividend Comparison

OCTB has not paid dividends to shareholders, while CBOO's dividend yield for the trailing twelve months is around 0.57%.

Position	TTM	2025
CBOO Calamos Bitcoin Structured Alt Protection ETF - October	0.57%	0.57%
OCTB Aptus October Buffer ETF	0.00%	0.00%

Frequently Asked Questions

Can I hold both OCTB and CBOO in my portfolio?

OCTB and CBOO have a correlation of 0.33, 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 CBOO?

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 CBOO?

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

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

CBOO has the higher dividend yield at 0.57%, compared with 0.00% for OCTB.

What is the main difference between OCTB and CBOO?

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