AIYY vs. MSTY

Last updated Jul 14, 2026

AIYY (YieldMax AI Option Income Strategy ETF) and MSTY (YieldMax™ MSTR Option Income Strategy ETF) are both Derivative Income funds from YieldMax. Both are actively managed. Over the past year, AIYY returned -64.04% vs -73.76% for MSTY. At a 0.39 correlation, their price movements are largely independent. Both charge a 0.99% expense ratio.

Performance

AIYY vs. MSTY - Performance Comparison

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

Returns By Period

The year-to-date returns for both stocks are quite close, with AIYY having a -34.25% return and MSTY slightly lower at -35.55%.

AIYY

• 1D: 0.88%
• 1M: -13.56%
• 6M: -37.27%
• YTD: -34.25%
• 1Y: -64.04%
• 3Y*: —
• 5Y*: —
• 10Y*: —

MSTY

• 1D: -2.03%
• 1M: -23.27%
• 6M: -39.01%
• YTD: -35.55%
• 1Y: -73.76%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

AIYY vs. MSTY - Yearly Performance Comparison

	2026 (YTD)	2025	2024
AIYY YieldMax AI Option Income Strategy ETF	-34.25%	-58.98%	-8.04%
MSTY YieldMax™ MSTR Option Income Strategy ETF	-35.55%	-42.71%	212.16%

Correlation

The correlation between AIYY and MSTY is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.42
Correlation (All Time) Calculated using the full available price history since Feb 22, 2024	0.39

Return for Risk

AIYY vs. MSTY — 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: 0
AIYY Calmar Ratio Rank: 1
AIYY Martin Ratio Rank: 3

MSTY

MSTY Risk / Return Rank: 1
MSTY Sharpe Ratio Rank: 1
MSTY Sortino Ratio Rank: 0
MSTY Omega Ratio Rank: 0
MSTY Calmar Ratio Rank: 1
MSTY Martin Ratio Rank: 1

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. MSTY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax AI Option Income Strategy ETF (AIYY) and YieldMax™ MSTR Option Income Strategy ETF (MSTY). 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	MSTY	Difference
Sharpe ratio: Return per unit of total volatility	-1.18	-1.15	-0.03
Sortino ratio: Return per unit of downside risk	-1.91	-2.35	+0.44
Omega ratio: Gain probability vs. loss probability	0.74	0.75	-0.01
Calmar ratio: Return relative to maximum drawdown	-0.94	-0.95	+0.02
Martin ratio: Return relative to average drawdown	-1.23	-1.41	+0.18

AIYY vs. MSTY - Sharpe Ratio Comparison

The current AIYY Sharpe Ratio is -1.18, which is comparable to the MSTY Sharpe Ratio of -1.15. The chart below compares the historical Sharpe Ratios of AIYY and MSTY, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

AIYY vs. MSTY - Drawdown Comparison

The maximum AIYY drawdown since its inception was -79.56%, roughly equal to the maximum MSTY drawdown of -77.40%. Use the drawdown chart below to compare losses from any high point for AIYY and MSTY.

Drawdown Indicators

	AIYY	MSTY	Difference
Max Drawdown Largest peak-to-trough decline	-79.56%	-77.40%	-2.16%
Max Drawdown (1Y) Largest decline over 1 year	-68.45%	-77.40%	+8.95%
Current Drawdown Current decline from peak	-78.52%	-74.66%	-3.86%
Average Drawdown Average peak-to-trough decline	-42.41%	-28.01%	-14.40%
Ulcer Index Depth and duration of drawdowns from previous peaks	51.97%	52.19%	-0.22%

Volatility

AIYY vs. MSTY - Volatility Comparison

The current volatility for YieldMax AI Option Income Strategy ETF (AIYY) is 13.37%, while YieldMax™ MSTR Option Income Strategy ETF (MSTY) has a volatility of 23.76%. This indicates that AIYY experiences smaller price fluctuations and is considered to be less risky than MSTY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AIYY	MSTY	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.37%	23.76%	-10.39%
Volatility (6M) Calculated over the trailing 6-month period	40.12%	53.06%	-12.94%
Volatility (1Y) Calculated over the trailing 1-year period	54.52%	64.61%	-10.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	50.16%	72.32%	-22.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	50.16%	72.32%	-22.16%

AIYY vs. MSTY - Expense Ratio Comparison

Both AIYY and MSTY have an expense ratio of 0.99%.

Dividends

AIYY vs. MSTY - Dividend Comparison

AIYY's dividend yield for the trailing twelve months is around 151.00%, less than MSTY's 289.43% yield.

Position	TTM	2025	2024
AIYY YieldMax AI Option Income Strategy ETF	151.00%	168.33%	98.26%
MSTY YieldMax™ MSTR Option Income Strategy ETF	289.43%	294.61%	104.56%

Frequently Asked Questions

Can I hold both AIYY and MSTY in my portfolio?

AIYY and MSTY have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AIYY or MSTY?

MSTY has higher volatility (23.76%) compared to AIYY (13.37%). In terms of maximum drawdown, AIYY dropped -79.56% vs MSTY's -77.40%.

Which ETF is better, AIYY or MSTY?

On 1-year performance, AIYY leads with -64.04% vs -73.76% for MSTY. Both ETFs have the same 0.99% expense ratio. On volatility, AIYY has been the lower-risk option at 13.37%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AIYY or MSTY?

Over the 1-year period, AIYY has performed better with a -64.04% return vs -73.76%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AIYY or MSTY?

AIYY and MSTY have the same expense ratio: 0.99% per year.

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

MSTY has the higher dividend yield at 289.43%, compared with 151.00% for AIYY.

Which has better risk-adjusted returns?

MSTY currently has the higher Sharpe Ratio (-1.15 vs -1.18), 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.