VBIRX vs. VSIGX
VBIRX (Vanguard Short-Term Bond Index Fund Admiral Shares) and VSIGX (Vanguard Intermediate-Term Treasury Index Fund Admiral Shares) are both mutual funds - VBIRX is a Total Bond Market fund managed by Vanguard, while VSIGX is a Government Bonds fund managed by Vanguard. Over the past 10 years, VBIRX returned 1.91%/yr vs 1.23%/yr for VSIGX. Their correlation of 0.83 suggests significant overlap in exposure. Both charge a 0.07% expense ratio.
Performance
VBIRX vs. VSIGX - Performance Comparison
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Returns By Period
In the year-to-date period, VBIRX achieves a 0.20% return, which is significantly higher than VSIGX's -0.48% return. Over the past 10 years, VBIRX has outperformed VSIGX with an annualized return of 1.91%, while VSIGX has yielded a comparatively lower 1.23% annualized return.
VBIRX
- 1D
- -0.10%
- 1M
- 0.05%
- YTD
- 0.20%
- 6M
- 0.54%
- 1Y
- 3.43%
- 3Y*
- 4.38%
- 5Y*
- 1.59%
- 10Y*
- 1.91%
VSIGX
- 1D
- -0.15%
- 1M
- -0.18%
- YTD
- -0.48%
- 6M
- -0.35%
- 1Y
- 3.06%
- 3Y*
- 3.50%
- 5Y*
- 0.09%
- 10Y*
- 1.23%
VBIRX vs. VSIGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VBIRX Vanguard Short-Term Bond Index Fund Admiral Shares | 0.20% | 6.09% | 3.75% | 4.87% | -5.63% | -1.20% | 4.69% | 4.86% | 1.37% | 1.18% |
VSIGX Vanguard Intermediate-Term Treasury Index Fund Admiral Shares | -0.48% | 7.36% | 1.65% | 4.39% | -10.69% | -2.60% | 7.65% | 6.26% | 1.35% | 1.58% |
Correlation
The correlation between VBIRX and VSIGX is 0.86, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.86 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.88 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.89 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.84 |
Correlation (All Time) Calculated using the full available price history since Nov 24, 2009 | 0.83 |
The correlation between VBIRX and VSIGX has been stable across timeframes, ranging from 0.83 to 0.89 - a consistent structural relationship.
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Return for Risk
VBIRX vs. VSIGX — Risk / Return Rank
VBIRX
VSIGX
VBIRX vs. VSIGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) and Vanguard Intermediate-Term Treasury Index Fund Admiral Shares (VSIGX). 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.
| VBIRX | VSIGX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.56 | ||
| Sortino ratioReturn per unit of downside risk | +1.14 | ||
| Omega ratioGain probability vs. loss probability | 1.32 | 1.18 | +0.13 |
| Calmar ratioReturn relative to maximum drawdown | 2.36 | 1.24 | +1.13 |
| Martin ratioReturn relative to average drawdown | 7.65 | 3.73 | +3.92 |
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
| VBIRX | VSIGX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.62 | 1.05 | +0.56 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.54 | 0.02 | +0.52 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.80 | 0.28 | +0.52 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.97 | 0.50 | +0.47 |
Drawdowns
VBIRX vs. VSIGX - Drawdown Comparison
The maximum VBIRX drawdown since its inception was -8.69%, smaller than the maximum VSIGX drawdown of -16.15%. Use the drawdown chart below to compare losses from any high point for VBIRX and VSIGX.
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Drawdown Indicators
| VBIRX | VSIGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -8.69% | -16.15% | +7.46% |
Max Drawdown (1Y)Largest decline over 1 year | -1.54% | -2.86% | +1.32% |
Max Drawdown (3Y)Largest decline over 3 years | -1.55% | -4.24% | +2.69% |
Max Drawdown (5Y)Largest decline over 5 years | -8.64% | -15.07% | +6.43% |
Max Drawdown (10Y)Largest decline over 10 years | -8.69% | -16.15% | +7.46% |
Current DrawdownCurrent decline from peak | -0.73% | -2.21% | +1.48% |
Average DrawdownAverage peak-to-trough decline | -0.99% | -3.51% | +2.52% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.48% | 0.95% | -0.47% |
Volatility
VBIRX vs. VSIGX - Volatility Comparison
The current volatility for Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) is 0.69%, while Vanguard Intermediate-Term Treasury Index Fund Admiral Shares (VSIGX) has a volatility of 1.08%. This indicates that VBIRX experiences smaller price fluctuations and is considered to be less risky than VSIGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VBIRX | VSIGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.69% | 1.08% | -0.39% |
Volatility (6M)Calculated over the trailing 6-month period | 1.59% | 2.35% | -0.76% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.26% | 3.36% | -1.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.96% | 5.33% | -2.37% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.40% | 4.45% | -2.05% |
VBIRX vs. VSIGX - Expense Ratio Comparison
Both VBIRX and VSIGX have an expense ratio of 0.07%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
VBIRX vs. VSIGX - Dividend Comparison
VBIRX's dividend yield for the trailing twelve months is around 4.00%, more than VSIGX's 3.84% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VBIRX Vanguard Short-Term Bond Index Fund Admiral Shares | 4.00% | 3.83% | 3.37% | 2.41% | 1.46% | 1.22% | 1.77% | 2.24% | 2.03% | 1.66% | 1.50% | 1.41% |
VSIGX Vanguard Intermediate-Term Treasury Index Fund Admiral Shares | 3.84% | 3.76% | 3.95% | 2.70% | 1.71% | 1.66% | 2.21% | 2.21% | 2.05% | 1.67% | 1.56% | 1.70% |
Frequently Asked Questions
VBIRX and VSIGX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VSIGX has higher volatility (1.08%) compared to VBIRX (0.69%). In terms of maximum drawdown, VBIRX dropped -8.69% vs VSIGX's -16.15%.
VBIRX currently has the higher Sharpe Ratio (1.62 vs 1.05), 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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