TBIL vs. WEEK

Last updated Jun 4, 2026

TBIL (US Treasury 3 Month Bill ETF) and WEEK (Roundhill Weekly T-Bill ETF) are both Ultrashort Bond funds. TBIL is passively managed, while WEEK is actively managed. Over the past year, TBIL returned 3.93% vs 3.81% for WEEK. At a 0.22 correlation, their price movements are largely independent. TBIL charges 0.15%/yr vs 0.19%/yr for WEEK.

Performance

TBIL vs. WEEK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in US Treasury 3 Month Bill ETF (TBIL) and Roundhill Weekly T-Bill ETF (WEEK). 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 TBIL having a 1.49% return and WEEK slightly lower at 1.44%.

TBIL

• 1D: 0.00%
• 1M: 0.30%
• YTD: 1.49%
• 6M: 1.78%
• 1Y: 3.93%
• 3Y*: 4.64%
• 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)

TBIL vs. WEEK - Yearly Performance Comparison

	2026 (YTD)	2025
TBIL US Treasury 3 Month Bill ETF	1.49%	3.46%
WEEK Roundhill Weekly T-Bill ETF	1.44%	3.37%

Correlation

The correlation between TBIL and WEEK 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	0.22

Return for Risk

TBIL vs. WEEK — Risk / Return Rank

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

TBIL

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

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.

TBIL vs. WEEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for US Treasury 3 Month Bill ETF (TBIL) 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.

	TBIL	WEEK	Difference
Sharpe ratio: Return per unit of total volatility	13.78	9.29	+4.49
Sortino ratio: Return per unit of downside risk	58.40	19.14	+39.25
Omega ratio: Gain probability vs. loss probability	17.16	4.65	+12.51
Calmar ratio: Return relative to maximum drawdown	196.84	29.49	+167.35
Martin ratio: Return relative to average drawdown	934.41	263.82	+670.58
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TBIL vs. WEEK - Sharpe Ratio Comparison

The current TBIL Sharpe Ratio is 13.78, which is higher than the WEEK Sharpe Ratio of 9.29. The chart below compares the historical Sharpe Ratios of TBIL 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

	TBIL	WEEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	13.78	9.29	+4.49
Sharpe Ratio (All Time) Calculated using the full available price history	14.07	10.05	+4.02

Drawdowns

TBIL vs. WEEK - Drawdown Comparison

The maximum TBIL drawdown since its inception was -0.10%, smaller than the maximum WEEK drawdown of -0.13%. Use the drawdown chart below to compare losses from any high point for TBIL and WEEK.

Drawdown Indicators

	TBIL	WEEK	Difference
Max Drawdown Largest peak-to-trough decline	-0.10%	-0.13%	+0.03%
Max Drawdown (1Y) Largest decline over 1 year	-0.02%	-0.13%	+0.11%
Max Drawdown (3Y) Largest decline over 3 years	-0.02%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.00%	-0.01%	+0.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	0.01%	-0.01%

Volatility

TBIL vs. WEEK - Volatility Comparison

US Treasury 3 Month Bill ETF (TBIL) has a higher volatility of 0.08% compared to Roundhill Weekly T-Bill ETF (WEEK) at 0.07%. This indicates that TBIL'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

	TBIL	WEEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.08%	0.07%	+0.01%
Volatility (6M) Calculated over the trailing 6-month period	0.19%	0.25%	-0.06%
Volatility (1Y) Calculated over the trailing 1-year period	0.29%	0.41%	-0.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.32%	0.39%	-0.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.32%	0.39%	-0.07%

TBIL vs. WEEK - Expense Ratio Comparison

TBIL has a 0.15% expense ratio, which is lower than WEEK's 0.19% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

TBIL vs. WEEK - Dividend Comparison

TBIL's dividend yield for the trailing twelve months is around 3.82%, more than WEEK's 3.72% yield.

Position	TTM	2025	2024	2023	2022
TBIL US Treasury 3 Month Bill ETF	3.82%	4.07%	5.02%	5.00%	1.10%
WEEK Roundhill Weekly T-Bill ETF	3.72%	3.27%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TBIL and WEEK in my portfolio?

TBIL and WEEK 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, TBIL or WEEK?

TBIL has higher volatility (0.08%) compared to WEEK (0.07%). In terms of maximum drawdown, TBIL dropped -0.10% vs WEEK's -0.13%.

Which ETF is better, TBIL or WEEK?

On 1-year performance, TBIL leads with 3.93% vs 3.81% for WEEK. On fees, TBIL is cheaper at 0.15% 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, TBIL or WEEK?

Over the 1-year period, TBIL 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, TBIL or WEEK?

TBIL is cheaper with a 0.15% expense ratio, compared with 0.19% for WEEK.

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

TBIL has the higher dividend yield at 3.82%, compared with 3.72% for WEEK.

What is the main difference between TBIL and WEEK?

They also come from different issuers: US Benchmark Series and Roundhill. Their fees differ too: 0.15% for TBIL and 0.19% for WEEK.

Which has better risk-adjusted returns?

TBIL currently has the higher Sharpe Ratio (13.78 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.