OBIL vs. VGLT
OBIL (US Treasury 12 Month Bill ETF) and VGLT (Vanguard Long-Term Treasury ETF) are both Government Bonds funds - OBIL tracks the ICE BofA US 1-Year Treasury Bill Index - Benchmark TR Gross while VGLT tracks the Bloomberg U.S. Long Treasury Index. Both are passively managed. Over the past 3 years, OBIL returned 4.55%/yr vs -0.72%/yr for VGLT. At a 0.47 correlation, their price movements are largely independent. OBIL charges 0.15%/yr vs 0.03%/yr for VGLT.
Performance
OBIL vs. VGLT - Performance Comparison
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Returns By Period
In the year-to-date period, OBIL achieves a 1.17% return, which is significantly higher than VGLT's -0.41% return.
OBIL
- 1D
- 0.00%
- 1M
- 0.27%
- YTD
- 1.17%
- 6M
- 1.51%
- 1Y
- 3.83%
- 3Y*
- 4.55%
- 5Y*
- —
- 10Y*
- —
VGLT
- 1D
- -0.40%
- 1M
- 0.71%
- YTD
- -0.41%
- 6M
- -1.68%
- 1Y
- 5.25%
- 3Y*
- -0.72%
- 5Y*
- -5.30%
- 10Y*
- -1.10%
OBIL vs. VGLT - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
OBIL US Treasury 12 Month Bill ETF | 1.17% | 4.19% | 4.94% | 4.69% | 0.53% |
VGLT Vanguard Long-Term Treasury ETF | -0.41% | 5.35% | -6.28% | 3.27% | 1.01% |
Correlation
The correlation between OBIL and VGLT is 0.40, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.40 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.45 |
Correlation (All Time) Calculated using the full available price history since Nov 16, 2022 | 0.47 |
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Return for Risk
OBIL vs. VGLT — Risk / Return Rank
OBIL
VGLT
OBIL vs. VGLT - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for US Treasury 12 Month Bill ETF (OBIL) and Vanguard Long-Term Treasury ETF (VGLT). 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.
| OBIL | VGLT | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +6.48 | ||
| Sortino ratioReturn per unit of downside risk | +15.27 | ||
| Omega ratioGain probability vs. loss probability | 3.70 | 1.10 | +2.60 |
| Calmar ratioReturn relative to maximum drawdown | 27.56 | 0.75 | +26.81 |
| Martin ratioReturn relative to average drawdown | 150.40 | 1.96 | +148.43 |
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
| OBIL | VGLT | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 7.07 | 0.59 | +6.48 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | -0.37 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | -0.08 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 5.38 | 0.19 | +5.19 |
Drawdowns
OBIL vs. VGLT - Drawdown Comparison
The maximum OBIL drawdown since its inception was -0.33%, smaller than the maximum VGLT drawdown of -46.18%. Use the drawdown chart below to compare losses from any high point for OBIL and VGLT.
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Drawdown Indicators
| OBIL | VGLT | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.33% | -46.18% | +45.85% |
Max Drawdown (1Y)Largest decline over 1 year | -0.14% | -7.01% | +6.87% |
Max Drawdown (3Y)Largest decline over 3 years | -0.21% | -17.68% | +17.47% |
Max Drawdown (5Y)Largest decline over 5 years | — | -40.98% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -46.18% | — |
Current DrawdownCurrent decline from peak | 0.00% | -36.83% | +36.83% |
Average DrawdownAverage peak-to-trough decline | -0.03% | -15.06% | +15.03% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.03% | 2.68% | -2.65% |
Volatility
OBIL vs. VGLT - Volatility Comparison
The current volatility for US Treasury 12 Month Bill ETF (OBIL) is 0.10%, while Vanguard Long-Term Treasury ETF (VGLT) has a volatility of 2.59%. This indicates that OBIL experiences smaller price fluctuations and is considered to be less risky than VGLT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OBIL | VGLT | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.10% | 2.59% | -2.49% |
Volatility (6M)Calculated over the trailing 6-month period | 0.33% | 5.94% | -5.61% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.54% | 8.88% | -8.34% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.82% | 14.58% | -13.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.82% | 13.81% | -12.99% |
OBIL vs. VGLT - Expense Ratio Comparison
OBIL has a 0.15% expense ratio, which is higher than VGLT'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
OBIL vs. VGLT - Dividend Comparison
OBIL's dividend yield for the trailing twelve months is around 3.65%, less than VGLT's 4.61% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OBIL US Treasury 12 Month Bill ETF | 3.65% | 3.83% | 4.56% | 4.92% | 0.52% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
VGLT Vanguard Long-Term Treasury ETF | 4.61% | 4.44% | 4.33% | 3.33% | 2.84% | 1.82% | 2.15% | 2.46% | 2.71% | 2.55% | 2.69% | 3.21% |
Frequently Asked Questions
OBIL and VGLT have a correlation of 0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VGLT has higher volatility (2.59%) compared to OBIL (0.10%). In terms of maximum drawdown, OBIL dropped -0.33% vs VGLT's -46.18%.
On 3-year performance, OBIL leads with 4.55% vs -0.72% for VGLT. On fees, VGLT is cheaper at 0.03% per year. On volatility, OBIL has been the lower-risk option at 0.10%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, OBIL has performed better with a 4.55% return vs -0.72%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
VGLT is cheaper with a 0.03% expense ratio, compared with 0.15% for OBIL.
VGLT has the higher dividend yield at 4.61%, compared with 3.65% for OBIL.
OBIL tracks ICE BofA US 1-Year Treasury Bill Index - Benchmark TR Gross, while VGLT tracks Bloomberg U.S. Long Treasury Index. They also come from different issuers: US Benchmark Series and Vanguard. Their fees differ too: 0.15% for OBIL and 0.03% for VGLT.
OBIL currently has the higher Sharpe Ratio (7.07 vs 0.59), 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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