VMBIX vs. VIGAX
Compare and contrast key facts about Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX) and Vanguard Growth Index Fund Admiral Shares (VIGAX).
VMBIX is managed by Vanguard. It was launched on Oct 31, 2013. VIGAX is managed by Vanguard. It was launched on Nov 13, 2000.
Performance
VMBIX vs. VIGAX - Performance Comparison
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VMBIX vs. VIGAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMBIX Vanguard Mortgage-Backed Securities Index Fund Institutional Shares | 0.25% | 8.44% | 1.78% | 4.97% | -11.56% | -1.30% | 3.77% | 6.19% | 0.88% | 2.38% |
VIGAX Vanguard Growth Index Fund Admiral Shares | -13.83% | 19.43% | 32.67% | 46.76% | -33.14% | 27.26% | 40.18% | 37.23% | -3.35% | 27.80% |
Returns By Period
In the year-to-date period, VMBIX achieves a 0.25% return, which is significantly higher than VIGAX's -13.83% return. Over the past 10 years, VMBIX has underperformed VIGAX with an annualized return of 1.39%, while VIGAX has yielded a comparatively higher 15.56% annualized return.
VMBIX
- 1D
- 0.52%
- 1M
- -1.75%
- YTD
- 0.25%
- 6M
- 1.83%
- 1Y
- 5.47%
- 3Y*
- 4.28%
- 5Y*
- 0.50%
- 10Y*
- 1.39%
VIGAX
- 1D
- -0.57%
- 1M
- -8.83%
- YTD
- -13.83%
- 6M
- -12.31%
- 1Y
- 13.72%
- 3Y*
- 19.56%
- 5Y*
- 10.93%
- 10Y*
- 15.56%
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VMBIX vs. VIGAX - Expense Ratio Comparison
Both VMBIX and VIGAX have an expense ratio of 0.05%, 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
VMBIX vs. VIGAX — Risk / Return Rank
VMBIX
VIGAX
VMBIX vs. VIGAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). 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.
| VMBIX | VIGAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.32 | 0.61 | +0.71 |
Sortino ratioReturn per unit of downside risk | 1.90 | 1.04 | +0.86 |
Omega ratioGain probability vs. loss probability | 1.24 | 1.15 | +0.09 |
Calmar ratioReturn relative to maximum drawdown | 2.42 | 0.66 | +1.76 |
Martin ratioReturn relative to average drawdown | 6.87 | 2.37 | +4.50 |
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
| VMBIX | VIGAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.32 | 0.61 | +0.71 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.08 | 0.49 | -0.41 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.29 | 0.73 | -0.43 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.51 | 0.43 | +0.08 |
Correlation
The correlation between VMBIX and VIGAX is -0.05. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
VMBIX vs. VIGAX - Dividend Comparison
VMBIX's dividend yield for the trailing twelve months is around 3.89%, more than VIGAX's 0.46% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VMBIX Vanguard Mortgage-Backed Securities Index Fund Institutional Shares | 3.89% | 4.20% | 4.27% | 3.29% | 2.33% | 1.01% | 2.02% | 2.76% | 2.74% | 2.18% | 2.13% | 2.04% |
VIGAX Vanguard Growth Index Fund Admiral Shares | 0.46% | 0.40% | 0.46% | 0.57% | 0.69% | 0.47% | 0.66% | 0.94% | 1.31% | 1.14% | 1.39% | 1.31% |
Drawdowns
VMBIX vs. VIGAX - Drawdown Comparison
The maximum VMBIX drawdown since its inception was -17.44%, smaller than the maximum VIGAX drawdown of -50.66%. Use the drawdown chart below to compare losses from any high point for VMBIX and VIGAX.
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Drawdown Indicators
| VMBIX | VIGAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.44% | -50.66% | +33.22% |
Max Drawdown (1Y)Largest decline over 1 year | -2.58% | -16.51% | +13.93% |
Max Drawdown (5Y)Largest decline over 5 years | -17.11% | -35.63% | +18.52% |
Max Drawdown (10Y)Largest decline over 10 years | -17.44% | -35.63% | +18.19% |
Current DrawdownCurrent decline from peak | -1.75% | -16.51% | +14.76% |
Average DrawdownAverage peak-to-trough decline | -2.52% | -12.02% | +9.50% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.91% | 4.57% | -3.66% |
Volatility
VMBIX vs. VIGAX - Volatility Comparison
The current volatility for Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX) is 1.69%, while Vanguard Growth Index Fund Admiral Shares (VIGAX) has a volatility of 5.52%. This indicates that VMBIX experiences smaller price fluctuations and is considered to be less risky than VIGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMBIX | VIGAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.69% | 5.52% | -3.83% |
Volatility (6M)Calculated over the trailing 6-month period | 2.47% | 12.10% | -9.63% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.29% | 22.69% | -18.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.33% | 22.30% | -15.97% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.76% | 21.49% | -16.73% |