MRNY vs. WEEK

Last updated Jun 4, 2026

MRNY (YieldMax MRNA Option Income Strategy ETF) and WEEK (Roundhill Weekly T-Bill ETF) are both exchange-traded funds - MRNY is a Derivative Income fund actively managed by YieldMax, while WEEK is a Ultrashort Bond fund actively managed by Roundhill. Both are actively managed. Over the past year, MRNY returned 47.46% vs 3.81% for WEEK. At a correlation of -0.05, they often move in opposite directions. MRNY charges 0.99%/yr vs 0.19%/yr for WEEK.

Performance

MRNY vs. WEEK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in YieldMax MRNA Option Income Strategy ETF (MRNY) and Roundhill Weekly T-Bill ETF (WEEK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MRNY achieves a 51.59% return, which is significantly higher than WEEK's 1.44% return.

MRNY

• 1D: 5.73%
• 1M: 4.23%
• YTD: 51.59%
• 6M: 62.21%
• 1Y: 47.46%
• 3Y*: —
• 5Y*: —
• 10Y*: —

WEEK

• 1D: 0.02%
• 1M: 0.28%
• YTD: 1.44%
• 6M: 1.74%
• 1Y: 3.81%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MRNY vs. WEEK - Yearly Performance Comparison

	2026 (YTD)	2025
MRNY YieldMax MRNA Option Income Strategy ETF	51.59%	-15.76%
WEEK Roundhill Weekly T-Bill ETF	1.44%	3.37%

Correlation

The correlation between MRNY and WEEK is -0.12, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.12
Correlation (All Time) Calculated using the full available price history since Mar 7, 2025	-0.05

Return for Risk

MRNY vs. WEEK — Risk / Return Rank

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

MRNY

MRNY Risk / Return Rank: 28
MRNY Sharpe Ratio Rank: 27
MRNY Sortino Ratio Rank: 31
MRNY Omega Ratio Rank: 29
MRNY Calmar Ratio Rank: 30
MRNY Martin Ratio Rank: 23

WEEK

WEEK Risk / Return Rank: 99
WEEK Sharpe Ratio Rank: 99
WEEK Sortino Ratio Rank: 99
WEEK Omega Ratio Rank: 99
WEEK Calmar Ratio Rank: 99
WEEK Martin Ratio Rank: 99

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.

MRNY vs. WEEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax MRNA Option Income Strategy ETF (MRNY) and Roundhill Weekly T-Bill ETF (WEEK). 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.

	MRNY	WEEK	Difference
Sharpe ratio: Return per unit of total volatility	0.97	9.29	-8.32
Sortino ratio: Return per unit of downside risk	1.69	19.14	-17.45
Omega ratio: Gain probability vs. loss probability	1.20	4.65	-3.46
Calmar ratio: Return relative to maximum drawdown	1.51	29.49	-27.97
Martin ratio: Return relative to average drawdown	2.95	263.82	-260.87
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MRNY vs. WEEK - Sharpe Ratio Comparison

The current MRNY Sharpe Ratio is 0.97, which is lower than the WEEK Sharpe Ratio of 9.29. The chart below compares the historical Sharpe Ratios of MRNY and WEEK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MRNY	WEEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.97	9.29	-8.32
Sharpe Ratio (All Time) Calculated using the full available price history	-0.49	10.05	-10.54

Drawdowns

MRNY vs. WEEK - Drawdown Comparison

The maximum MRNY drawdown since its inception was -82.15%, which is greater than WEEK's maximum drawdown of -0.13%. Use the drawdown chart below to compare losses from any high point for MRNY and WEEK.

Drawdown Indicators

	MRNY	WEEK	Difference
Max Drawdown Largest peak-to-trough decline	-82.15%	-0.13%	-82.02%
Max Drawdown (1Y) Largest decline over 1 year	-31.53%	-0.13%	-31.40%
Current Drawdown Current decline from peak	-68.09%	0.00%	-68.09%
Average Drawdown Average peak-to-trough decline	-52.62%	-0.01%	-52.61%
Ulcer Index Depth and duration of drawdowns from previous peaks	16.15%	0.01%	+16.14%

Volatility

MRNY vs. WEEK - Volatility Comparison

YieldMax MRNA Option Income Strategy ETF (MRNY) has a higher volatility of 13.36% compared to Roundhill Weekly T-Bill ETF (WEEK) at 0.07%. This indicates that MRNY's price experiences larger fluctuations and is considered to be riskier than WEEK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MRNY	WEEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.36%	0.07%	+13.29%
Volatility (6M) Calculated over the trailing 6-month period	37.05%	0.25%	+36.80%
Volatility (1Y) Calculated over the trailing 1-year period	49.37%	0.41%	+48.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	50.76%	0.39%	+50.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	50.76%	0.39%	+50.37%

MRNY vs. WEEK - Expense Ratio Comparison

MRNY has a 0.99% expense ratio, which is higher than WEEK's 0.19% expense ratio.

Dividends

MRNY vs. WEEK - Dividend Comparison

MRNY's dividend yield for the trailing twelve months is around 100.06%, more than WEEK's 3.72% yield.

Position	TTM	2025	2024	2023
MRNY YieldMax MRNA Option Income Strategy ETF	100.06%	145.98%	178.49%	1.75%
WEEK Roundhill Weekly T-Bill ETF	3.72%	3.27%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MRNY and WEEK in my portfolio?

MRNY and WEEK have a correlation of -0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MRNY or WEEK?

MRNY has higher volatility (13.36%) compared to WEEK (0.07%). In terms of maximum drawdown, MRNY dropped -82.15% vs WEEK's -0.13%.

Which ETF is better, MRNY or WEEK?

On 1-year performance, MRNY leads with 47.46% vs 3.81% for WEEK. On fees, WEEK is cheaper at 0.19% per year. On volatility, WEEK has been the lower-risk option at 0.07%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MRNY or WEEK?

Over the 1-year period, MRNY has performed better with a 47.46% return vs 3.81%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MRNY or WEEK?

WEEK is cheaper with a 0.19% expense ratio, compared with 0.99% for MRNY.

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

MRNY has the higher dividend yield at 100.06%, compared with 3.72% for WEEK.

What is the main difference between MRNY and WEEK?

MRNY is categorized as Derivative Income, while WEEK is Ultrashort Bond. They also come from different issuers: YieldMax and Roundhill. Their fees differ too: 0.99% for MRNY and 0.19% for WEEK.

Which has better risk-adjusted returns?

WEEK currently has the higher Sharpe Ratio (9.29 vs 0.97), 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.