WEEK vs. VBIL

Last updated Jun 4, 2026

WEEK (Roundhill Weekly T-Bill ETF) and VBIL (Vanguard 0-3 Month Treasury Bill ETF) are both Ultrashort Bond funds. WEEK is actively managed, while VBIL is passively managed. Over the past year, WEEK returned 3.81% vs 3.93% for VBIL. At a 0.23 correlation, their price movements are largely independent. WEEK charges 0.19%/yr vs 0.07%/yr for VBIL.

Performance

WEEK vs. VBIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill Weekly T-Bill ETF (WEEK) and Vanguard 0-3 Month Treasury Bill ETF (VBIL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with WEEK having a 1.44% return and VBIL slightly higher at 1.50%.

WEEK

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

VBIL

• 1D: 0.01%
• 1M: 0.29%
• YTD: 1.50%
• 6M: 1.80%
• 1Y: 3.93%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

WEEK vs. VBIL - Yearly Performance Comparison

	2026 (YTD)	2025
WEEK Roundhill Weekly T-Bill ETF	1.44%	3.37%
VBIL Vanguard 0-3 Month Treasury Bill ETF	1.50%	3.45%

Correlation

The correlation between WEEK and VBIL is 0.22, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.22
Correlation (All Time) Calculated using the full available price history since Mar 7, 2025	0.23

Return for Risk

WEEK vs. VBIL — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments 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

VBIL

VBIL Risk / Return Rank: 100
VBIL Sharpe Ratio Rank: 100
VBIL Sortino Ratio Rank: 100
VBIL Omega Ratio Rank: 100
VBIL Calmar Ratio Rank: 99
VBIL Martin Ratio Rank: 100

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.

WEEK vs. VBIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill Weekly T-Bill ETF (WEEK) and Vanguard 0-3 Month Treasury Bill ETF (VBIL). 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.

	WEEK	VBIL	Difference
Sharpe ratio: Return per unit of total volatility	9.29	15.17	-5.87
Sortino ratio: Return per unit of downside risk	19.14	39.11	-19.97
Omega ratio: Gain probability vs. loss probability	4.65	21.10	-16.45
Calmar ratio: Return relative to maximum drawdown	29.49	42.61	-13.13
Martin ratio: Return relative to average drawdown	263.82	532.54	-268.72
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WEEK vs. VBIL - Sharpe Ratio Comparison

The current WEEK Sharpe Ratio is 9.29, which is lower than the VBIL Sharpe Ratio of 15.17. The chart below compares the historical Sharpe Ratios of WEEK and VBIL, 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

	WEEK	VBIL	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	9.29	15.17	-5.87
Sharpe Ratio (All Time) Calculated using the full available price history	10.05	13.44	-3.39

Drawdowns

WEEK vs. VBIL - Drawdown Comparison

The maximum WEEK drawdown since its inception was -0.13%, which is greater than VBIL's maximum drawdown of -0.09%. Use the drawdown chart below to compare losses from any high point for WEEK and VBIL.

Drawdown Indicators

	WEEK	VBIL	Difference
Max Drawdown Largest peak-to-trough decline	-0.13%	-0.09%	-0.04%
Max Drawdown (1Y) Largest decline over 1 year	-0.13%	-0.09%	-0.04%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.01%	-0.00%	-0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.01%	0.01%	0.00%

Volatility

WEEK vs. VBIL - Volatility Comparison

Roundhill Weekly T-Bill ETF (WEEK) has a higher volatility of 0.07% compared to Vanguard 0-3 Month Treasury Bill ETF (VBIL) at 0.06%. This indicates that WEEK's price experiences larger fluctuations and is considered to be riskier than VBIL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WEEK	VBIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.07%	0.06%	+0.01%
Volatility (6M) Calculated over the trailing 6-month period	0.25%	0.16%	+0.09%
Volatility (1Y) Calculated over the trailing 1-year period	0.41%	0.26%	+0.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.39%	0.30%	+0.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.39%	0.30%	+0.09%

WEEK vs. VBIL - Expense Ratio Comparison

WEEK has a 0.19% expense ratio, which is higher than VBIL's 0.07% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

WEEK vs. VBIL - Dividend Comparison

WEEK's dividend yield for the trailing twelve months is around 3.72%, more than VBIL's 3.65% yield.

Position	TTM	2025
VBIL Vanguard 0-3 Month Treasury Bill ETF	3.65%	3.12%
WEEK Roundhill Weekly T-Bill ETF	3.72%	3.27%

Frequently Asked Questions

Can I hold both WEEK and VBIL in my portfolio?

WEEK and VBIL have a correlation of 0.22, 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 VBIL?

WEEK has higher volatility (0.07%) compared to VBIL (0.06%). In terms of maximum drawdown, WEEK dropped -0.13% vs VBIL's -0.09%.

Which ETF is better, WEEK or VBIL?

On 1-year performance, VBIL leads with 3.93% vs 3.81% for WEEK. On fees, VBIL is cheaper at 0.07% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, WEEK or VBIL?

Over the 1-year period, VBIL has performed better with a 3.93% return vs 3.81%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, WEEK or VBIL?

VBIL is cheaper with a 0.07% expense ratio, compared with 0.19% for WEEK.

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

WEEK has the higher dividend yield at 3.72%, compared with 3.65% for VBIL.

What is the main difference between WEEK and VBIL?

They also come from different issuers: Roundhill and Vanguard. Their fees differ too: 0.19% for WEEK and 0.07% for VBIL.

Which has better risk-adjusted returns?

VBIL currently has the higher Sharpe Ratio (15.17 vs 9.29), 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.