WEEK vs. ULTY

Last updated Aug 5, 2026

WEEK (Roundhill Weekly T-Bill ETF) and ULTY (YieldMax Ultra Option Income Strategy ETF) are both exchange-traded funds - WEEK is a Ultrashort Bond fund actively managed by Roundhill, while ULTY is a Derivative Income fund actively managed by YieldMax. Both are actively managed. Over the past year, WEEK returned 3.65% vs -7.61% for ULTY. Their -0.03 correlation means they have often moved in opposite directions in the past. WEEK charges 0.19%/yr vs 1.40%/yr for ULTY.

Performance

WEEK vs. ULTY - Performance Comparison

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

Returns By Period

In the year-to-date period, WEEK achieves a 2.00% return, which is significantly lower than ULTY's 6.90% return.

WEEK

• 1D: 0.03%
• 1M: 0.22%
• 6M: 1.70%
• YTD: 2.00%
• 1Y: 3.65%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.82%

ULTY

• 1D: 2.06%
• 1M: 0.38%
• 6M: 5.96%
• YTD: 6.90%
• 1Y: -7.61%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 0.41%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ULTY YieldMax Ultra Option Income Strategy ETF	$14.70M	$14.52M	$17.73M
WEEK Roundhill Weekly T-Bill ETF	$3.96M	$3.53M	$3.88M

WEEK vs. ULTY - Yearly Performance Comparison

	2026 (YTD)	2025
WEEK Roundhill Weekly T-Bill ETF	2.00%	3.37%
ULTY YieldMax Ultra Option Income Strategy ETF	6.90%	3.75%

Correlation

The correlation between WEEK and ULTY is 0.02, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.02
Correlation (All Time) Calculated using the full available price history since Mar 6, 2025	-0.03

Return for Risk

WEEK vs. ULTY — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

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

ULTY

ULTY Risk / Return Rank: 6
ULTY Sharpe Ratio Rank: 6
ULTY Sortino Ratio Rank: 6
ULTY Omega Ratio Rank: 6
ULTY Calmar Ratio Rank: 7
ULTY Martin Ratio Rank: 7

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

WEEK vs. ULTY - Risk-Adjusted Trends Comparison

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

	WEEK	ULTY	Difference
Sharpe ratio: Return per unit of total volatility	8.46	-0.35	+8.80
Sortino ratio: Return per unit of downside risk	17.20	-0.33	+17.53
Omega ratio: Gain probability vs. loss probability	4.12	0.96	+3.16
Calmar ratio: Return relative to maximum drawdown	28.25	-0.32	+28.56
Martin ratio: Return relative to average drawdown	234.26	-0.57	+234.84

WEEK vs. ULTY - Sharpe Ratio Comparison

The current WEEK Sharpe Ratio is 8.46, which is higher than the ULTY Sharpe Ratio of -0.35. The chart below compares the historical Sharpe Ratios of WEEK and ULTY, 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

WEEK vs. ULTY - Drawdown Comparison

The maximum WEEK drawdown since its inception was -0.13%, smaller than the maximum ULTY drawdown of -26.85%. Use the drawdown chart below to compare losses from any high point for WEEK and ULTY.

Drawdown Indicators

	WEEK	ULTY	Difference
Max Drawdown Largest peak-to-trough decline	-0.13%	-26.85%	+26.72%
Max Drawdown (1Y) Largest decline over 1 year	-0.13%	-24.16%	+24.03%
Current Drawdown Current decline from peak	-0.03%	-12.35%	+12.32%
Average Drawdown Average peak-to-trough decline	-0.01%	-10.04%	+10.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.02%	13.32%	-13.30%

Volatility

WEEK vs. ULTY - Volatility Comparison

The current volatility for Roundhill Weekly T-Bill ETF (WEEK) is 0.12%, while YieldMax Ultra Option Income Strategy ETF (ULTY) has a volatility of 6.90%. This indicates that WEEK experiences smaller price fluctuations and is considered to be less risky than ULTY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WEEK	ULTY	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.12%	6.90%	-6.78%
Volatility (6M) Calculated over the trailing 6-month period	0.26%	17.19%	-16.93%
Volatility (1Y) Calculated over the trailing 1-year period	0.43%	22.20%	-21.77%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.39%	27.09%	-26.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.39%	27.09%	-26.70%

WEEK vs. ULTY - Expense Ratio Comparison

WEEK has a 0.19% expense ratio, which is lower than ULTY's 1.40% expense ratio.

Dividends

WEEK vs. ULTY - Dividend Comparison

WEEK's dividend yield for the trailing twelve months is around 3.70%, less than ULTY's 109.48% yield.

Position	TTM	2025	2024
ULTY YieldMax Ultra Option Income Strategy ETF	109.48%	142.99%	111.70%
WEEK Roundhill Weekly T-Bill ETF	3.70%	3.27%	0.00%

Frequently Asked Questions

Can I hold both WEEK and ULTY in my portfolio?

WEEK and ULTY have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WEEK or ULTY?

ULTY has higher volatility (6.90%) compared to WEEK (0.12%). In terms of maximum drawdown, WEEK dropped -0.13% vs ULTY's -26.85%.

Which ETF is better, WEEK or ULTY?

On 1-year performance, WEEK leads with 3.65% vs -7.61% for ULTY. On fees, WEEK is cheaper at 0.19% per year. On volatility, WEEK has been the lower-risk option at 0.12%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, WEEK or ULTY?

Over the 1-year period, WEEK has performed better with a 3.65% return vs -7.61%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, WEEK or ULTY?

WEEK is cheaper with a 0.19% expense ratio, compared with 1.40% for ULTY.

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

ULTY has the higher dividend yield at 109.48%, compared with 3.70% for WEEK.

What is the main difference between WEEK and ULTY?

WEEK is categorized as Ultrashort Bond, while ULTY is Derivative Income. They also come from different issuers: Roundhill and YieldMax. Their fees differ too: 0.19% for WEEK and 1.40% for ULTY.

Which has better risk-adjusted returns?

WEEK currently has the higher Sharpe Ratio (8.46 vs -0.35), 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.