VMBSX vs. VBIAX
Compare and contrast key facts about Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) and Vanguard Balanced Index Fund Admiral Shares (VBIAX).
VMBSX is managed by Vanguard. It was launched on Dec 3, 2009. VBIAX is managed by Vanguard. It was launched on Nov 13, 2000.
Performance
VMBSX vs. VBIAX - Performance Comparison
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VMBSX vs. VBIAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMBSX Vanguard Mortgage-Backed Securities Index Fund Admiral Shares | 0.20% | 8.43% | 1.76% | 4.99% | -11.56% | -1.35% | 3.74% | 11.47% | 0.87% | 2.32% |
VBIAX Vanguard Balanced Index Fund Admiral Shares | -2.43% | 13.61% | 14.58% | 17.54% | -16.90% | 14.21% | 16.40% | 21.78% | -2.86% | 13.89% |
Returns By Period
In the year-to-date period, VMBSX achieves a 0.20% return, which is significantly higher than VBIAX's -2.43% return. Over the past 10 years, VMBSX has underperformed VBIAX with an annualized return of 1.86%, while VBIAX has yielded a comparatively higher 8.97% annualized return.
VMBSX
- 1D
- 0.48%
- 1M
- -1.81%
- YTD
- 0.20%
- 6M
- 1.79%
- 1Y
- 5.42%
- 3Y*
- 4.25%
- 5Y*
- 0.48%
- 10Y*
- 1.86%
VBIAX
- 1D
- 1.84%
- 1M
- -3.62%
- YTD
- -2.43%
- 6M
- -0.89%
- 1Y
- 12.55%
- 3Y*
- 12.24%
- 5Y*
- 6.52%
- 10Y*
- 8.97%
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VMBSX vs. VBIAX - Expense Ratio Comparison
Both VMBSX and VBIAX 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%.
Return for Risk
VMBSX vs. VBIAX — Risk / Return Rank
VMBSX
VBIAX
VMBSX vs. VBIAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) and Vanguard Balanced Index Fund Admiral Shares (VBIAX). 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.
| VMBSX | VBIAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.31 | 1.14 | +0.17 |
Sortino ratioReturn per unit of downside risk | 1.87 | 1.70 | +0.17 |
Omega ratioGain probability vs. loss probability | 1.24 | 1.25 | -0.01 |
Calmar ratioReturn relative to maximum drawdown | 2.39 | 1.71 | +0.68 |
Martin ratioReturn relative to average drawdown | 6.79 | 8.03 | -1.24 |
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
| VMBSX | VBIAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.31 | 1.14 | +0.17 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.08 | 0.59 | -0.52 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.39 | 0.80 | -0.42 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.58 | 0.61 | -0.02 |
Correlation
The correlation between VMBSX and VBIAX is 0.08, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
VMBSX vs. VBIAX - Dividend Comparison
VMBSX's dividend yield for the trailing twelve months is around 3.87%, less than VBIAX's 5.74% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VMBSX Vanguard Mortgage-Backed Securities Index Fund Admiral Shares | 3.87% | 4.18% | 4.24% | 3.28% | 2.31% | 0.99% | 2.00% | 7.48% | 2.72% | 2.16% | 1.98% | 2.01% |
VBIAX Vanguard Balanced Index Fund Admiral Shares | 5.74% | 6.00% | 5.27% | 4.35% | 2.83% | 3.19% | 2.65% | 2.28% | 2.32% | 1.95% | 2.09% | 2.09% |
Drawdowns
VMBSX vs. VBIAX - Drawdown Comparison
The maximum VMBSX drawdown since its inception was -17.44%, smaller than the maximum VBIAX drawdown of -35.90%. Use the drawdown chart below to compare losses from any high point for VMBSX and VBIAX.
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Drawdown Indicators
| VMBSX | VBIAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.44% | -35.90% | +18.46% |
Max Drawdown (1Y)Largest decline over 1 year | -2.59% | -7.78% | +5.19% |
Max Drawdown (5Y)Largest decline over 5 years | -17.12% | -21.53% | +4.41% |
Max Drawdown (10Y)Largest decline over 10 years | -17.44% | -22.78% | +5.34% |
Current DrawdownCurrent decline from peak | -1.81% | -4.10% | +2.29% |
Average DrawdownAverage peak-to-trough decline | -2.49% | -4.47% | +1.98% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.91% | 1.66% | -0.75% |
Volatility
VMBSX vs. VBIAX - Volatility Comparison
The current volatility for Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) is 1.68%, while Vanguard Balanced Index Fund Admiral Shares (VBIAX) has a volatility of 3.71%. This indicates that VMBSX experiences smaller price fluctuations and is considered to be less risky than VBIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMBSX | VBIAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.68% | 3.71% | -2.03% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 6.20% | -3.70% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.33% | 11.39% | -7.06% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.36% | 11.05% | -4.69% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.83% | 11.18% | -6.35% |