OCTB vs. CBTY

Last updated Jul 14, 2026

OCTB (Aptus October Buffer ETF) and CBTY (Calamos Bitcoin 80 Series Structured Alt Protection ETF - July) are both Defined Outcome funds. OCTB is actively managed, while CBTY is passively managed. At a 0.42 correlation, their price movements are largely independent. OCTB charges 0.25%/yr vs 0.69%/yr for CBTY.

Performance

OCTB vs. CBTY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Aptus October Buffer ETF (OCTB) and Calamos Bitcoin 80 Series Structured Alt Protection ETF - July (CBTY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OCTB achieves a 6.81% return, which is significantly higher than CBTY's -11.95% return.

OCTB

• 1D: -0.40%
• 1M: 1.18%
• 6M: 5.77%
• YTD: 6.81%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CBTY

• 1D: -1.35%
• 1M: -1.00%
• 6M: -13.64%
• YTD: -11.95%
• 1Y: -24.51%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

OCTB vs. CBTY - Yearly Performance Comparison

	2026 (YTD)	2025
OCTB Aptus October Buffer ETF	6.81%	2.37%
CBTY Calamos Bitcoin 80 Series Structured Alt Protection ETF - July	-11.95%	-14.31%

Correlation

The correlation between OCTB and CBTY 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 14, 2025	0.42

Return for Risk

OCTB vs. CBTY — Risk / Return Rank

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

OCTB

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

CBTY

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

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.

OCTB vs. CBTY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Aptus October Buffer ETF (OCTB) and Calamos Bitcoin 80 Series Structured Alt Protection ETF - July (CBTY). 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.

	OCTB	CBTY	Difference
Sharpe ratio: Return per unit of total volatility	—	-1.51	—
Sortino ratio: Return per unit of downside risk	—	-2.14	—
Omega ratio: Gain probability vs. loss probability	—	0.75	—
Calmar ratio: Return relative to maximum drawdown	—	-0.89	—
Martin ratio: Return relative to average drawdown	—	-1.31	—

Drawdowns

OCTB vs. CBTY - Drawdown Comparison

The maximum OCTB drawdown since its inception was -4.79%, smaller than the maximum CBTY drawdown of -27.79%. Use the drawdown chart below to compare losses from any high point for OCTB and CBTY.

Drawdown Indicators

	OCTB	CBTY	Difference
Max Drawdown Largest peak-to-trough decline	-4.79%	-27.79%	+23.00%
Max Drawdown (1Y) Largest decline over 1 year	—	-27.79%	—
Current Drawdown Current decline from peak	-0.40%	-27.38%	+26.98%
Average Drawdown Average peak-to-trough decline	-0.67%	-15.71%	+15.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	18.71%	—

Volatility

Volatility by Period

	OCTB	CBTY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.68%	—
Volatility (6M) Calculated over the trailing 6-month period	—	8.91%	—
Volatility (1Y) Calculated over the trailing 1-year period	7.18%	16.29%	-9.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.18%	16.39%	-9.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.18%	16.39%	-9.21%

OCTB vs. CBTY - Expense Ratio Comparison

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

Dividends

OCTB vs. CBTY - Dividend Comparison

OCTB has not paid dividends to shareholders, while CBTY's dividend yield for the trailing twelve months is around 1.67%.

Position	TTM	2025
CBTY Calamos Bitcoin 80 Series Structured Alt Protection ETF - July	1.67%	1.47%
OCTB Aptus October Buffer ETF	0.00%	0.00%

Frequently Asked Questions

Can I hold both OCTB and CBTY in my portfolio?

OCTB and CBTY 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 CBTY?

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 CBTY?

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

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

CBTY has the higher dividend yield at 1.67%, compared with 0.00% for OCTB.

What is the main difference between OCTB and CBTY?

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