IBUF vs. APRB

Last updated Aug 4, 2026

IBUF (Innovator International Developed 10 Buffer ETF - Quarterly) and APRB (Aptus April Buffer ETF) are both Defined Outcome funds. Both are actively managed. Their 0.66 correlation means they have sometimes moved together and sometimes differently. IBUF charges 0.85%/yr vs 0.25%/yr for APRB.

Performance

IBUF vs. APRB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Innovator International Developed 10 Buffer ETF - Quarterly (IBUF) and Aptus April Buffer ETF (APRB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IBUF achieves a 9.00% return, which is significantly higher than APRB's 6.08% return.

IBUF

• 1D: 0.22%
• 1M: 1.21%
• 6M: 7.82%
• YTD: 9.00%
• 1Y: 15.36%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 12.18%

APRB

• 1D: 0.28%
• 1M: 0.99%
• 6M: 4.73%
• YTD: 6.08%
• 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)
APRB Aptus April Buffer ETF	$26.14K	$47.18K	$43.83K
IBUF Innovator International Developed 10 Buffer ETF - Quarterly	$366.94K	$408.38K	$553.77K

IBUF vs. APRB - Yearly Performance Comparison

	2026 (YTD)	2025
IBUF Innovator International Developed 10 Buffer ETF - Quarterly	9.00%	2.83%
APRB Aptus April Buffer ETF	6.08%	2.48%

Correlation

The correlation between IBUF and APRB is 0.66, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 14, 2025	0.66

Return for Risk

IBUF vs. APRB — Risk / Return Rank

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

IBUF

IBUF Risk / Return Rank: 94
IBUF Sharpe Ratio Rank: 92
IBUF Sortino Ratio Rank: 94
IBUF Omega Ratio Rank: 94
IBUF Calmar Ratio Rank: 97
IBUF Martin Ratio Rank: 96

APRB

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.

IBUF vs. APRB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Innovator International Developed 10 Buffer ETF - Quarterly (IBUF) and Aptus April Buffer ETF (APRB). 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.

	IBUF	APRB	Difference
Sharpe ratio: Return per unit of total volatility	2.50	—	—
Sortino ratio: Return per unit of downside risk	3.91	—	—
Omega ratio: Gain probability vs. loss probability	1.53	—	—
Calmar ratio: Return relative to maximum drawdown	7.12	—	—
Martin ratio: Return relative to average drawdown	24.78	—	—

Drawdowns

IBUF vs. APRB - Drawdown Comparison

The maximum IBUF drawdown since its inception was -5.92%, which is greater than APRB's maximum drawdown of -4.59%. Use the drawdown chart below to compare losses from any high point for IBUF and APRB.

Drawdown Indicators

	IBUF	APRB	Difference
Max Drawdown Largest peak-to-trough decline	-5.92%	-4.59%	-1.33%
Max Drawdown (1Y) Largest decline over 1 year	-2.17%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.47%	-0.65%	+0.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.62%	—	—

Volatility

Volatility by Period

	IBUF	APRB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.41%	—	—
Volatility (6M) Calculated over the trailing 6-month period	5.46%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	6.18%	5.71%	+0.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.68%	5.71%	+0.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.68%	5.71%	+0.97%

IBUF vs. APRB - Expense Ratio Comparison

IBUF has a 0.85% expense ratio, which is higher than APRB's 0.25% expense ratio.

Dividends

IBUF vs. APRB - Dividend Comparison

Neither IBUF nor APRB has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both IBUF and APRB in my portfolio?

IBUF and APRB have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, IBUF or APRB?

On fees, APRB 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, IBUF or APRB?

APRB is cheaper with a 0.25% expense ratio, compared with 0.85% for IBUF.

Which ETF pays a higher dividend yield, IBUF or APRB?

IBUF and APRB have nearly identical dividend yields, around 0.00%.

What is the main difference between IBUF and APRB?

They also come from different issuers: Innovator and Aptus. Their fees differ too: 0.85% for IBUF and 0.25% for APRB.