XBIL vs. VOO
XBIL (US Treasury 6 Month Bill ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - XBIL is a Ultrashort Bond fund tracking the ICE BofA US 6-Month Treasury Bill Index - Benchmark TR Gross, while VOO is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 3 years, XBIL returned 4.67%/yr vs 22.68%/yr for VOO. At a correlation of -0.02, they often move in opposite directions. XBIL charges 0.15%/yr vs 0.03%/yr for VOO.
Performance
XBIL vs. VOO - Performance Comparison
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Returns By Period
In the year-to-date period, XBIL achieves a 1.45% return, which is significantly lower than VOO's 11.34% return.
XBIL
- 1D
- 0.02%
- 1M
- 0.27%
- YTD
- 1.45%
- 6M
- 1.77%
- 1Y
- 3.90%
- 3Y*
- 4.67%
- 5Y*
- —
- 10Y*
- —
VOO
- 1D
- 0.39%
- 1M
- 4.62%
- YTD
- 11.34%
- 6M
- 11.27%
- 1Y
- 28.62%
- 3Y*
- 22.68%
- 5Y*
- 13.98%
- 10Y*
- 15.55%
XBIL vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | |
|---|---|---|---|---|
XBIL US Treasury 6 Month Bill ETF | 1.45% | 4.17% | 5.16% | 4.30% |
VOO Vanguard S&P 500 ETF | 11.34% | 17.82% | 24.98% | 21.27% |
Correlation
The correlation between XBIL and VOO is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.06 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.02 |
Correlation (All Time) Calculated using the full available price history since Mar 8, 2023 | -0.02 |
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Return for Risk
XBIL vs. VOO — Risk / Return Rank
XBIL
VOO
XBIL vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for US Treasury 6 Month Bill ETF (XBIL) and Vanguard S&P 500 ETF (VOO). 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.
| XBIL | VOO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +11.04 | ||
| Sortino ratioReturn per unit of downside risk | +48.68 | ||
| Omega ratioGain probability vs. loss probability | 12.88 | 1.44 | +11.44 |
| Calmar ratioReturn relative to maximum drawdown | 98.28 | 3.23 | +95.05 |
| Martin ratioReturn relative to average drawdown | 773.53 | 15.03 | +758.49 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| XBIL | VOO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 13.48 | 2.44 | +11.04 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.84 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.87 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 12.49 | 0.89 | +11.60 |
Drawdowns
XBIL vs. VOO - Drawdown Comparison
The maximum XBIL drawdown since its inception was -0.08%, smaller than the maximum VOO drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for XBIL and VOO.
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Drawdown Indicators
| XBIL | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.08% | -33.99% | +33.91% |
Max Drawdown (1Y)Largest decline over 1 year | -0.04% | -8.90% | +8.86% |
Max Drawdown (3Y)Largest decline over 3 years | -0.07% | -18.69% | +18.62% |
Max Drawdown (5Y)Largest decline over 5 years | — | -24.52% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.99% | — |
Current DrawdownCurrent decline from peak | 0.00% | -0.32% | +0.32% |
Average DrawdownAverage peak-to-trough decline | -0.00% | -3.69% | +3.69% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.01% | 1.91% | -1.90% |
Volatility
XBIL vs. VOO - Volatility Comparison
The current volatility for US Treasury 6 Month Bill ETF (XBIL) is 0.08%, while Vanguard S&P 500 ETF (VOO) has a volatility of 2.78%. This indicates that XBIL experiences smaller price fluctuations and is considered to be less risky than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| XBIL | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.08% | 2.78% | -2.70% |
Volatility (6M)Calculated over the trailing 6-month period | 0.18% | 8.90% | -8.72% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.29% | 11.80% | -11.51% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.37% | 16.81% | -16.44% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.37% | 18.00% | -17.63% |
XBIL vs. VOO - Expense Ratio Comparison
XBIL has a 0.15% expense ratio, which is higher than VOO's 0.03% 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
XBIL vs. VOO - Dividend Comparison
XBIL's dividend yield for the trailing twelve months is around 3.77%, more than VOO's 1.02% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VOO Vanguard S&P 500 ETF | 1.02% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
XBIL US Treasury 6 Month Bill ETF | 3.77% | 4.01% | 4.90% | 4.30% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
XBIL and VOO have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VOO has higher volatility (2.78%) compared to XBIL (0.08%). In terms of maximum drawdown, XBIL dropped -0.08% vs VOO's -33.99%.
On 3-year performance, VOO leads with 22.68% vs 4.67% for XBIL. On fees, VOO is cheaper at 0.03% per year. On volatility, XBIL has been the lower-risk option at 0.08%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, VOO has performed better with a 22.68% return vs 4.67%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
VOO is cheaper with a 0.03% expense ratio, compared with 0.15% for XBIL.
XBIL has the higher dividend yield at 3.77%, compared with 1.02% for VOO.
XBIL is categorized as Ultrashort Bond, while VOO is S&P 500. XBIL tracks ICE BofA US 6-Month Treasury Bill Index - Benchmark TR Gross, while VOO tracks S&P 500 Index. They also come from different issuers: US Benchmark Series and Vanguard. Their fees differ too: 0.15% for XBIL and 0.03% for VOO.
XBIL currently has the higher Sharpe Ratio (13.48 vs 2.44), 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.
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