EPAI vs. AIYY

Last updated Jun 4, 2026

EPAI (Harbor AI Inflection Strategy ETF) and AIYY (YieldMax AI Option Income Strategy ETF) are both exchange-traded funds - EPAI is a Technology Equities fund actively managed by Harbor, while AIYY is a Derivative Income fund actively managed by YieldMax. Both are actively managed. At a 0.25 correlation, their price movements are largely independent. EPAI charges 0.88%/yr vs 0.99%/yr for AIYY.

Performance

EPAI vs. AIYY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Harbor AI Inflection Strategy ETF (EPAI) and YieldMax AI Option Income Strategy ETF (AIYY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EPAI achieves a 47.68% return, which is significantly higher than AIYY's -24.26% return.

EPAI

• 1D: 0.85%
• 1M: 9.43%
• YTD: 47.68%
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

AIYY

• 1D: -3.43%
• 1M: 9.34%
• YTD: -24.26%
• 6M: -29.50%
• 1Y: -57.47%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

EPAI vs. AIYY - Yearly Performance Comparison

	2026 (YTD)	2025
EPAI Harbor AI Inflection Strategy ETF	47.68%	0.86%
AIYY YieldMax AI Option Income Strategy ETF	-24.26%	-0.55%

Correlation

The correlation between EPAI and AIYY is 0.25, 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 Dec 19, 2025	0.25

Return for Risk

EPAI vs. AIYY — Risk / Return Rank

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

AIYY

AIYY Risk / Return Rank: 2
AIYY Sharpe Ratio Rank: 1
AIYY Sortino Ratio Rank: 1
AIYY Omega Ratio Rank: 1
AIYY Calmar Ratio Rank: 2
AIYY Martin Ratio Rank: 3

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.

EPAI vs. AIYY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Harbor AI Inflection Strategy ETF (EPAI) and YieldMax AI Option Income Strategy ETF (AIYY). 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.

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

Sharpe Ratios by Period

	EPAI	AIYY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	-1.07	—
Sharpe Ratio (All Time) Calculated using the full available price history	4.70	-0.83	+5.52

Drawdowns

EPAI vs. AIYY - Drawdown Comparison

The maximum EPAI drawdown since its inception was -12.31%, smaller than the maximum AIYY drawdown of -79.48%. Use the drawdown chart below to compare losses from any high point for EPAI and AIYY.

Drawdown Indicators

	EPAI	AIYY	Difference
Max Drawdown Largest peak-to-trough decline	-12.31%	-79.48%	+67.17%
Max Drawdown (1Y) Largest decline over 1 year	—	-68.33%	—
Current Drawdown Current decline from peak	0.00%	-75.26%	+75.26%
Average Drawdown Average peak-to-trough decline	-2.67%	-41.04%	+38.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	47.63%	—

Volatility

Volatility by Period

	EPAI	AIYY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	15.67%	—
Volatility (6M) Calculated over the trailing 6-month period	—	39.16%	—
Volatility (1Y) Calculated over the trailing 1-year period	30.61%	53.83%	-23.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	30.61%	50.52%	-19.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.61%	50.52%	-19.91%

EPAI vs. AIYY - Expense Ratio Comparison

EPAI has a 0.88% expense ratio, which is lower than AIYY's 0.99% expense ratio.

Dividends

EPAI vs. AIYY - Dividend Comparison

EPAI has not paid dividends to shareholders, while AIYY's dividend yield for the trailing twelve months is around 158.78%.

Position	TTM	2025	2024
AIYY YieldMax AI Option Income Strategy ETF	158.78%	168.33%	98.26%
EPAI Harbor AI Inflection Strategy ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both EPAI and AIYY in my portfolio?

EPAI and AIYY have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, EPAI or AIYY?

On fees, EPAI is cheaper at 0.88% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, EPAI or AIYY?

EPAI is cheaper with a 0.88% expense ratio, compared with 0.99% for AIYY.

Which ETF pays a higher dividend yield, EPAI or AIYY?

AIYY has the higher dividend yield at 158.78%, compared with 0.00% for EPAI.

What is the main difference between EPAI and AIYY?

EPAI is categorized as Technology Equities, while AIYY is Derivative Income. They also come from different issuers: Harbor and YieldMax. Their fees differ too: 0.88% for EPAI and 0.99% for AIYY.