NMAY vs. OCTB

Last updated Jun 6, 2026

NMAY (Innovator Growth-100 Power Buffer ETF - May) and OCTB (Aptus October Buffer ETF) are both Defined Outcome funds. NMAY is passively managed, while OCTB is actively managed. Their correlation of 0.85 suggests significant overlap in exposure. NMAY charges 0.79%/yr vs 0.25%/yr for OCTB.

Performance

NMAY vs. OCTB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Innovator Growth-100 Power Buffer ETF - May (NMAY) 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, NMAY achieves a 4.51% return, which is significantly lower than OCTB's 5.35% return.

NMAY

• 1D: -1.76%
• 1M: 0.36%
• YTD: 4.51%
• 6M: 5.13%
• 1Y: 13.02%
• 3Y*: —
• 5Y*: —
• 10Y*: —

OCTB

• 1D: -0.93%
• 1M: 0.66%
• YTD: 5.35%
• 6M: 5.68%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

NMAY vs. OCTB - Yearly Performance Comparison

	2026 (YTD)	2025
NMAY Innovator Growth-100 Power Buffer ETF - May	4.51%	2.40%
OCTB Aptus October Buffer ETF	5.35%	2.37%

Correlation

The correlation between NMAY and OCTB is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 15, 2025	0.85

Return for Risk

NMAY vs. OCTB — Risk / Return Rank

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

NMAY

NMAY Risk / Return Rank: 91
NMAY Sharpe Ratio Rank: 86
NMAY Sortino Ratio Rank: 88
NMAY Omega Ratio Rank: 92
NMAY Calmar Ratio Rank: 94
NMAY Martin Ratio Rank: 96

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.

NMAY vs. OCTB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Innovator Growth-100 Power Buffer ETF - May (NMAY) 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.

	NMAY	OCTB	Difference
Sharpe ratio: Return per unit of total volatility	2.68	—	—
Sortino ratio: Return per unit of downside risk	3.78	—	—
Omega ratio: Gain probability vs. loss probability	1.58	—	—
Calmar ratio: Return relative to maximum drawdown	6.75	—	—
Martin ratio: Return relative to average drawdown	34.97	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	NMAY	OCTB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.68	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	3.00	1.73	+1.27

Drawdowns

NMAY vs. OCTB - Drawdown Comparison

The maximum NMAY drawdown since its inception was -1.94%, smaller than the maximum OCTB drawdown of -4.79%. Use the drawdown chart below to compare losses from any high point for NMAY and OCTB.

Drawdown Indicators

	NMAY	OCTB	Difference
Max Drawdown Largest peak-to-trough decline	-1.94%	-4.79%	+2.85%
Max Drawdown (1Y) Largest decline over 1 year	-1.94%	—	—
Current Drawdown Current decline from peak	-1.94%	-0.95%	-0.99%
Average Drawdown Average peak-to-trough decline	-0.20%	-0.70%	+0.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.37%	—	—

Volatility

Volatility by Period

	NMAY	OCTB	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.34%	—	—
Volatility (6M) Calculated over the trailing 6-month period	3.81%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	4.89%	7.26%	-2.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.33%	7.26%	-1.93%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.33%	7.26%	-1.93%

NMAY vs. OCTB - Expense Ratio Comparison

NMAY has a 0.79% expense ratio, which is higher than OCTB's 0.25% expense ratio.

Dividends

NMAY vs. OCTB - Dividend Comparison

Neither NMAY nor OCTB has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both NMAY and OCTB in my portfolio?

NMAY and OCTB have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, NMAY 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, NMAY or OCTB?

OCTB is cheaper with a 0.25% expense ratio, compared with 0.79% for NMAY.

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

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

What is the main difference between NMAY and OCTB?

They also come from different issuers: Innovator and Aptus Capital Advisors. Their fees differ too: 0.79% for NMAY and 0.25% for OCTB.