DMAY vs. OCTB

Last updated Aug 2, 2026

DMAY (FT Cboe Vest U.S. Equity Deep Buffer ETF - May) and OCTB (Aptus October Buffer ETF) are both Defined Outcome funds. DMAY is passively managed, while OCTB is actively managed. Their correlation of 0.92 means they have usually moved in the same direction. DMAY charges 0.85%/yr vs 0.25%/yr for OCTB.

Performance

DMAY vs. OCTB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FT Cboe Vest U.S. Equity Deep Buffer ETF - May (DMAY) and Aptus October Buffer ETF (OCTB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DMAY achieves a 4.47% return, which is significantly lower than OCTB's 7.27% return.

DMAY

• 1D: 0.40%
• 1M: 0.41%
• 6M: 3.91%
• YTD: 4.47%
• 1Y: 9.72%
• 3Y*: 10.82%
• 5Y*: 6.88%
• 10Y*: —
• ALL TIME*: 7.16%

OCTB

• 1D: 0.58%
• 1M: 0.86%
• 6M: 6.48%
• YTD: 7.27%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
DMAY FT Cboe Vest U.S. Equity Deep Buffer ETF - May	$400.10K	$440.69K	$1.81M
OCTB Aptus October Buffer ETF	$58.52K	$94.12K	$66.59K

DMAY vs. OCTB - Yearly Performance Comparison

	2026 (YTD)	2025
DMAY FT Cboe Vest U.S. Equity Deep Buffer ETF - May	4.47%	2.16%
OCTB Aptus October Buffer ETF	7.27%	2.37%

Correlation

The correlation between DMAY and OCTB is 0.92, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 14, 2025	0.92

Return for Risk

DMAY vs. OCTB — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

DMAY

DMAY Risk / Return Rank: 81
DMAY Sharpe Ratio Rank: 75
DMAY Sortino Ratio Rank: 78
DMAY Omega Ratio Rank: 83
DMAY Calmar Ratio Rank: 78
DMAY Martin Ratio Rank: 89

OCTB

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

DMAY vs. OCTB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FT Cboe Vest U.S. Equity Deep Buffer ETF - May (DMAY) and Aptus October Buffer ETF (OCTB). 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.

	DMAY	OCTB	Difference
Sharpe ratio: Return per unit of total volatility	1.70	—	—
Sortino ratio: Return per unit of downside risk	2.52	—	—
Omega ratio: Gain probability vs. loss probability	1.35	—	—
Calmar ratio: Return relative to maximum drawdown	2.78	—	—
Martin ratio: Return relative to average drawdown	14.06	—	—

Drawdowns

DMAY vs. OCTB - Drawdown Comparison

The maximum DMAY drawdown since its inception was -13.90%, which is greater than OCTB's maximum drawdown of -4.79%. Use the drawdown chart below to compare losses from any high point for DMAY and OCTB.

Drawdown Indicators

	DMAY	OCTB	Difference
Max Drawdown Largest peak-to-trough decline	-13.90%	-4.79%	-9.11%
Max Drawdown (1Y) Largest decline over 1 year	-3.36%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-12.38%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-13.90%	—	—
Current Drawdown Current decline from peak	-0.35%	0.00%	-0.35%
Average Drawdown Average peak-to-trough decline	-2.20%	-0.66%	-1.54%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.66%	—	—

Volatility

Volatility by Period

	DMAY	OCTB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.88%	—	—
Volatility (6M) Calculated over the trailing 6-month period	4.75%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	5.49%	7.16%	-1.67%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.10%	7.16%	+1.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.41%	7.16%	+1.25%

DMAY vs. OCTB - Expense Ratio Comparison

DMAY has a 0.85% expense ratio, which is higher than OCTB's 0.25% expense ratio.

Dividends

DMAY vs. OCTB - Dividend Comparison

Neither DMAY nor OCTB has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both DMAY and OCTB in my portfolio?

With a correlation of 0.92, DMAY and OCTB move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which ETF is better, DMAY or OCTB?

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, DMAY or OCTB?

OCTB is cheaper with a 0.25% expense ratio, compared with 0.85% for DMAY.

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

DMAY and OCTB have nearly identical dividend yields, around 0.00%.

What is the main difference between DMAY and OCTB?

They also come from different issuers: First Trust and Aptus. Their fees differ too: 0.85% for DMAY and 0.25% for OCTB.