AIYY vs. CWII

Last updated Jun 24, 2026

AIYY (YieldMax AI Option Income Strategy ETF) and CWII (REX CRWV Growth & Income ETF) are both Derivative Income funds. Both are actively managed. At a 0.38 correlation, their price movements are largely independent. AIYY charges 0.99%/yr vs 1.03%/yr for CWII.

Performance

AIYY vs. CWII - Performance Comparison

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

Returns By Period

In the year-to-date period, AIYY achieves a -31.24% return, which is significantly lower than CWII's 13,199.78% return.

AIYY

• 1D: 0.23%
• 1M: 0.82%
• YTD: -31.24%
• 6M: -33.10%
• 1Y: -58.91%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CWII

• 1D: 0.00%
• 1M: 10,273.16%
• YTD: 13,199.78%
• 6M: 11,946.90%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

AIYY vs. CWII - Yearly Performance Comparison

	2026 (YTD)	2025
AIYY YieldMax AI Option Income Strategy ETF	-31.24%	-19.35%
CWII REX CRWV Growth & Income ETF	13,199.78%	-45.06%

Correlation

The correlation between AIYY and CWII is 0.38, 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 Nov 4, 2025	0.38

Return for Risk

AIYY vs. CWII — Risk / Return Rank

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

AIYY

AIYY Risk / Return Rank: 1
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

CWII

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

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.

AIYY vs. CWII - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax AI Option Income Strategy ETF (AIYY) and REX CRWV Growth & Income ETF (CWII). 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.

	AIYY	CWII	Difference
Sharpe ratio: Return per unit of total volatility	-1.09	—	—
Sortino ratio: Return per unit of downside risk	-1.65	—	—
Omega ratio: Gain probability vs. loss probability	0.77	—	—
Calmar ratio: Return relative to maximum drawdown	-0.86	—	—
Martin ratio: Return relative to average drawdown	-1.19	—	—

Drawdowns

AIYY vs. CWII - Drawdown Comparison

The maximum AIYY drawdown since its inception was -79.48%, which is greater than CWII's maximum drawdown of -51.04%. Use the drawdown chart below to compare losses from any high point for AIYY and CWII.

Drawdown Indicators

	AIYY	CWII	Difference
Max Drawdown Largest peak-to-trough decline	-79.48%	-51.04%	-28.44%
Max Drawdown (1Y) Largest decline over 1 year	-68.33%	—	—
Current Drawdown Current decline from peak	-77.54%	0.00%	-77.54%
Average Drawdown Average peak-to-trough decline	-41.68%	-33.26%	-8.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	49.68%	—	—

Volatility

Volatility by Period

	AIYY	CWII	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.30%	—	—
Volatility (6M) Calculated over the trailing 6-month period	39.30%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	54.04%	13,701.30%	-13,647.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	50.29%	13,701.30%	-13,651.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	50.29%	13,701.30%	-13,651.01%

AIYY vs. CWII - Expense Ratio Comparison

AIYY has a 0.99% expense ratio, which is lower than CWII's 1.03% expense ratio.

Dividends

AIYY vs. CWII - Dividend Comparison

AIYY's dividend yield for the trailing twelve months is around 153.28%, more than CWII's 123.26% yield.

Position	TTM	2025	2024
AIYY YieldMax AI Option Income Strategy ETF	153.28%	168.33%	98.26%
CWII REX CRWV Growth & Income ETF	123.26%	6.09%	0.00%

Frequently Asked Questions

Can I hold both AIYY and CWII in my portfolio?

AIYY and CWII have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, AIYY or CWII?

On fees, AIYY is cheaper at 0.99% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, AIYY or CWII?

AIYY is cheaper with a 0.99% expense ratio, compared with 1.03% for CWII.

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

AIYY has the higher dividend yield at 153.28%, compared with 123.26% for CWII.

What is the main difference between AIYY and CWII?

They also come from different issuers: YieldMax and REX Shares. Their fees differ too: 0.99% for AIYY and 1.03% for CWII.