BMAY vs. IAPR

Last updated Jun 4, 2026

BMAY (Innovator U.S. Equity Buffer ETF - May) and IAPR (Innovator International Developed Power Buffer ETF - April) are both Defined Outcome funds from Innovator - BMAY tracks the S&P 500 Price Return Index while IAPR tracks the MSCI EAFE. Both are passively managed. Over the past 5 years, BMAY returned 9.09%/yr vs 5.03%/yr for IAPR. A 0.67 correlation means they provide meaningful diversification when combined. BMAY charges 0.79%/yr vs 0.85%/yr for IAPR.

Performance

BMAY vs. IAPR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Innovator U.S. Equity Buffer ETF - May (BMAY) and Innovator International Developed Power Buffer ETF - April (IAPR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BMAY achieves a 5.94% return, which is significantly lower than IAPR's 6.91% return.

BMAY

• 1D: -0.32%
• 1M: 3.01%
• YTD: 5.94%
• 6M: 6.79%
• 1Y: 15.18%
• 3Y*: 15.44%
• 5Y*: 9.09%
• 10Y*: —

IAPR

• 1D: -0.33%
• 1M: 1.90%
• YTD: 6.91%
• 6M: 8.28%
• 1Y: 14.08%
• 3Y*: 10.13%
• 5Y*: 5.03%
• 10Y*: —

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

BMAY vs. IAPR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
BMAY Innovator U.S. Equity Buffer ETF - May	5.94%	11.16%	19.06%	16.73%	-12.54%	9.42%
IAPR Innovator International Developed Power Buffer ETF - April	6.91%	15.51%	3.76%	7.67%	-7.61%	2.74%

Correlation

The correlation between BMAY and IAPR is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.67
Correlation (All Time) Calculated using the full available price history since Apr 5, 2021	0.67

The correlation between BMAY and IAPR has been stable across timeframes, ranging from 0.64 to 0.70 - a consistent structural relationship.

Return for Risk

BMAY vs. IAPR — Risk / Return Rank

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

BMAY

BMAY Risk / Return Rank: 91
BMAY Sharpe Ratio Rank: 87
BMAY Sortino Ratio Rank: 92
BMAY Omega Ratio Rank: 93
BMAY Calmar Ratio Rank: 88
BMAY Martin Ratio Rank: 95

IAPR

IAPR Risk / Return Rank: 78
IAPR Sharpe Ratio Rank: 64
IAPR Sortino Ratio Rank: 73
IAPR Omega Ratio Rank: 72
IAPR Calmar Ratio Rank: 90
IAPR Martin Ratio Rank: 91

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.

BMAY vs. IAPR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Innovator U.S. Equity Buffer ETF - May (BMAY) and Innovator International Developed Power Buffer ETF - April (IAPR). 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.

	BMAY	IAPR	Difference
Sharpe ratio Return per unit of total volatility	2.90	2.12	+0.78
Sortino ratio Return per unit of downside risk	4.44	3.31	+1.13
Omega ratio Gain probability vs. loss probability	1.64	1.43	+0.22
Calmar ratio Return relative to maximum drawdown	5.17	5.51	-0.35
Martin ratio Return relative to average drawdown	30.22	21.30	+8.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BMAY vs. IAPR - Sharpe Ratio Comparison

The current BMAY Sharpe Ratio is 2.90, which is higher than the IAPR Sharpe Ratio of 2.12. The chart below compares the historical Sharpe Ratios of BMAY and IAPR, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	BMAY	IAPR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.90	2.12	+0.78
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.81	0.57	+0.24
Sharpe Ratio (All Time) Calculated using the full available price history	1.00	0.61	+0.39

Drawdowns

BMAY vs. IAPR - Drawdown Comparison

The maximum BMAY drawdown since its inception was -17.66%, roughly equal to the maximum IAPR drawdown of -17.73%. Use the drawdown chart below to compare losses from any high point for BMAY and IAPR.

Drawdown Indicators

	BMAY	IAPR	Difference
Max Drawdown Largest peak-to-trough decline	-17.66%	-17.73%	+0.07%
Max Drawdown (1Y) Largest decline over 1 year	-2.95%	-2.56%	-0.39%
Max Drawdown (3Y) Largest decline over 3 years	-12.75%	-9.46%	-3.29%
Max Drawdown (5Y) Largest decline over 5 years	-17.66%	-17.73%	+0.07%
Current Drawdown Current decline from peak	-0.32%	-0.41%	+0.09%
Average Drawdown Average peak-to-trough decline	-3.08%	-3.88%	+0.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.50%	0.66%	-0.16%

Volatility

BMAY vs. IAPR - Volatility Comparison

The current volatility for Innovator U.S. Equity Buffer ETF - May (BMAY) is 1.65%, while Innovator International Developed Power Buffer ETF - April (IAPR) has a volatility of 2.73%. This indicates that BMAY experiences smaller price fluctuations and is considered to be less risky than IAPR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BMAY	IAPR	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.65%	2.73%	-1.08%
Volatility (6M) Calculated over the trailing 6-month period	4.04%	5.38%	-1.34%
Volatility (1Y) Calculated over the trailing 1-year period	5.26%	6.68%	-1.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.27%	8.85%	+2.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.99%	8.77%	+2.22%

BMAY vs. IAPR - Expense Ratio Comparison

BMAY has a 0.79% expense ratio, which is lower than IAPR's 0.85% expense ratio.

Dividends

BMAY vs. IAPR - Dividend Comparison

Neither BMAY nor IAPR has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both BMAY and IAPR in my portfolio?

BMAY and IAPR have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BMAY or IAPR?

IAPR has higher volatility (2.73%) compared to BMAY (1.65%). In terms of maximum drawdown, BMAY dropped -17.66% vs IAPR's -17.73%.

Which ETF is better, BMAY or IAPR?

On 5-year performance, BMAY leads with 9.09% vs 5.03% for IAPR. On fees, BMAY is cheaper at 0.79% per year. On volatility, BMAY has been the lower-risk option at 1.65%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BMAY or IAPR?

Over the 5-year period, BMAY has performed better with a 9.09% return vs 5.03%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BMAY or IAPR?

BMAY is cheaper with a 0.79% expense ratio, compared with 0.85% for IAPR.

Which ETF pays a higher dividend yield, BMAY or IAPR?

BMAY and IAPR have nearly identical dividend yields, around 0.00%.

What is the main difference between BMAY and IAPR?

BMAY tracks S&P 500 Price Return Index, while IAPR tracks MSCI EAFE. Their fees differ too: 0.79% for BMAY and 0.85% for IAPR.

Which has better risk-adjusted returns?

BMAY currently has the higher Sharpe Ratio (2.90 vs 2.12), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.