COYY vs. MRNY

Last updated Jul 17, 2026

COYY (GraniteShares YieldBOOST COIN ETF) and MRNY (YieldMax MRNA Option Income Strategy ETF) are both Derivative Income funds. Both are actively managed. At a 0.33 correlation, their price movements are largely independent. COYY charges 1.07%/yr vs 0.99%/yr for MRNY.

Performance

COYY vs. MRNY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GraniteShares YieldBOOST COIN ETF (COYY) and YieldMax MRNA Option Income Strategy ETF (MRNY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COYY achieves a -31.65% return, which is significantly lower than MRNY's 80.55% return.

COYY

• 1D: -1.10%
• 1M: -2.31%
• 6M: -33.70%
• YTD: -31.65%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MRNY

• 1D: -6.67%
• 1M: 9.93%
• 6M: 42.34%
• YTD: 80.55%
• 1Y: 53.06%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COYY vs. MRNY - Yearly Performance Comparison

	2026 (YTD)	2025
COYY GraniteShares YieldBOOST COIN ETF	-31.65%	-40.04%
MRNY YieldMax MRNA Option Income Strategy ETF	80.55%	-17.61%

Correlation

The correlation between COYY and MRNY is 0.33, 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 Jul 29, 2025	0.33

Return for Risk

COYY vs. MRNY — Risk / Return Rank

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

COYY

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

MRNY

MRNY Risk / Return Rank: 36
MRNY Sharpe Ratio Rank: 34
MRNY Sortino Ratio Rank: 39
MRNY Omega Ratio Rank: 37
MRNY Calmar Ratio Rank: 40
MRNY Martin Ratio Rank: 29

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.

COYY vs. MRNY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GraniteShares YieldBOOST COIN ETF (COYY) and YieldMax MRNA Option Income Strategy ETF (MRNY). 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.

	COYY	MRNY	Difference
Sharpe ratio: Return per unit of total volatility	—	1.00	—
Sortino ratio: Return per unit of downside risk	—	1.72	—
Omega ratio: Gain probability vs. loss probability	—	1.21	—
Calmar ratio: Return relative to maximum drawdown	—	1.69	—
Martin ratio: Return relative to average drawdown	—	3.25	—

Drawdowns

COYY vs. MRNY - Drawdown Comparison

The maximum COYY drawdown since its inception was -60.85%, smaller than the maximum MRNY drawdown of -82.15%. Use the drawdown chart below to compare losses from any high point for COYY and MRNY.

Drawdown Indicators

	COYY	MRNY	Difference
Max Drawdown Largest peak-to-trough decline	-60.85%	-82.15%	+21.30%
Max Drawdown (1Y) Largest decline over 1 year	—	-31.53%	—
Current Drawdown Current decline from peak	-59.75%	-61.99%	+2.24%
Average Drawdown Average peak-to-trough decline	-37.98%	-52.99%	+15.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	16.38%	—

Volatility

Volatility by Period

	COYY	MRNY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	21.57%	—
Volatility (6M) Calculated over the trailing 6-month period	—	38.66%	—
Volatility (1Y) Calculated over the trailing 1-year period	34.51%	53.19%	-18.68%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.51%	51.61%	-17.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.51%	51.61%	-17.10%

COYY vs. MRNY - Expense Ratio Comparison

COYY has a 1.07% expense ratio, which is higher than MRNY's 0.99% expense ratio.

Dividends

COYY vs. MRNY - Dividend Comparison

COYY's dividend yield for the trailing twelve months is around 441.99%, more than MRNY's 96.59% yield.

Position	TTM	2025	2024	2023
COYY GraniteShares YieldBOOST COIN ETF	441.99%	132.14%	0.00%	0.00%
MRNY YieldMax MRNA Option Income Strategy ETF	96.59%	145.98%	178.49%	1.75%

Frequently Asked Questions

Can I hold both COYY and MRNY in my portfolio?

COYY and MRNY have a correlation of 0.33, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, COYY or MRNY?

On fees, MRNY 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, COYY or MRNY?

MRNY is cheaper with a 0.99% expense ratio, compared with 1.07% for COYY.

Which ETF pays a higher dividend yield, COYY or MRNY?

COYY has the higher dividend yield at 441.99%, compared with 96.59% for MRNY.

What is the main difference between COYY and MRNY?

They also come from different issuers: GraniteShares and YieldMax. Their fees differ too: 1.07% for COYY and 0.99% for MRNY.