VIMAX vs. VBTLX
VIMAX (Vanguard Mid-Cap Index Fund Admiral Shares) and VBTLX (Vanguard Total Bond Market Index Fund Admiral Shares) are both mutual funds - VIMAX is a Mid Cap Blend Equities fund managed by Vanguard, while VBTLX is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Float Adjusted Index. Over the past 10 years, VIMAX returned 11.58%/yr vs 1.58%/yr for VBTLX. At a correlation of -0.17, they often move in opposite directions. VIMAX charges 0.05%/yr vs 0.04%/yr for VBTLX.
Performance
VIMAX vs. VBTLX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, VIMAX achieves a 10.54% return, which is significantly higher than VBTLX's 0.42% return. Over the past 10 years, VIMAX has outperformed VBTLX with an annualized return of 11.58%, while VBTLX has yielded a comparatively lower 1.58% annualized return.
VIMAX
- 1D
- 0.90%
- 1M
- 3.68%
- YTD
- 10.54%
- 6M
- 10.20%
- 1Y
- 18.73%
- 3Y*
- 16.82%
- 5Y*
- 8.10%
- 10Y*
- 11.58%
VBTLX
- 1D
- 0.00%
- 1M
- 0.55%
- YTD
- 0.42%
- 6M
- 0.35%
- 1Y
- 5.34%
- 3Y*
- 4.05%
- 5Y*
- 0.21%
- 10Y*
- 1.58%
VIMAX vs. VBTLX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VIMAX Vanguard Mid-Cap Index Fund Admiral Shares | 10.54% | 11.67% | 14.66% | 16.53% | -18.70% | 24.51% | 18.18% | 31.03% | -9.24% | 19.26% |
VBTLX Vanguard Total Bond Market Index Fund Admiral Shares | 0.42% | 7.17% | 1.26% | 5.74% | -13.16% | -1.81% | 7.72% | 8.73% | -0.25% | 3.56% |
Correlation
The correlation between VIMAX and VBTLX is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.27 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.26 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.17 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.00 |
Correlation (All Time) Calculated using the full available price history since Nov 13, 2001 | -0.17 |
The correlation between VIMAX and VBTLX shifts across timeframes, from -0.17 (all time) to 0.27 (1 year), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
VIMAX vs. VBTLX — Risk / Return Rank
VIMAX
VBTLX
VIMAX vs. VBTLX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mid-Cap Index Fund Admiral Shares (VIMAX) and Vanguard Total Bond Market Index Fund Admiral Shares (VBTLX). 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.
| VIMAX | VBTLX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.26 | ||
| Sortino ratioReturn per unit of downside risk | +0.26 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 1.24 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 2.44 | 1.86 | +0.59 |
| Martin ratioReturn relative to average drawdown | 9.28 | 5.58 | +3.70 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| VIMAX | VBTLX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.61 | 1.36 | +0.26 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.46 | 0.04 | +0.43 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.61 | 0.32 | +0.30 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.50 | 0.76 | -0.26 |
Drawdowns
VIMAX vs. VBTLX - Drawdown Comparison
The maximum VIMAX drawdown since its inception was -58.88%, which is greater than VBTLX's maximum drawdown of -18.81%. Use the drawdown chart below to compare losses from any high point for VIMAX and VBTLX.
Loading charts...
Drawdown Indicators
| VIMAX | VBTLX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.88% | -18.81% | -40.07% |
Max Drawdown (1Y)Largest decline over 1 year | -8.13% | -2.89% | -5.24% |
Max Drawdown (3Y)Largest decline over 3 years | -18.93% | -6.00% | -12.93% |
Max Drawdown (5Y)Largest decline over 5 years | -27.55% | -18.14% | -9.41% |
Max Drawdown (10Y)Largest decline over 10 years | -39.30% | -18.81% | -20.49% |
Current DrawdownCurrent decline from peak | 0.00% | -2.18% | +2.18% |
Average DrawdownAverage peak-to-trough decline | -8.12% | -2.67% | -5.45% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.14% | 0.96% | +1.18% |
Volatility
VIMAX vs. VBTLX - Volatility Comparison
Vanguard Mid-Cap Index Fund Admiral Shares (VIMAX) has a higher volatility of 2.97% compared to Vanguard Total Bond Market Index Fund Admiral Shares (VBTLX) at 1.38%. This indicates that VIMAX's price experiences larger fluctuations and is considered to be riskier than VBTLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| VIMAX | VBTLX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.97% | 1.38% | +1.59% |
Volatility (6M)Calculated over the trailing 6-month period | 9.28% | 2.80% | +6.48% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.30% | 3.97% | +8.33% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.63% | 6.01% | +11.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.92% | 4.98% | +13.94% |
VIMAX vs. VBTLX - Expense Ratio Comparison
VIMAX has a 0.05% expense ratio, which is higher than VBTLX's 0.04% 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
VIMAX vs. VBTLX - Dividend Comparison
VIMAX's dividend yield for the trailing twelve months is around 1.34%, less than VBTLX's 3.98% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VBTLX Vanguard Total Bond Market Index Fund Admiral Shares | 3.98% | 3.87% | 3.69% | 3.10% | 2.59% | 1.96% | 2.39% | 2.74% | 2.57% | 2.56% | 2.53% | 2.82% |
VIMAX Vanguard Mid-Cap Index Fund Admiral Shares | 1.34% | 1.51% | 1.48% | 1.50% | 1.59% | 1.11% | 1.44% | 1.47% | 1.82% | 1.35% | 1.45% | 1.47% |
Frequently Asked Questions
VIMAX and VBTLX have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VIMAX has higher volatility (2.97%) compared to VBTLX (1.38%). In terms of maximum drawdown, VIMAX dropped -58.88% vs VBTLX's -18.81%.
VIMAX currently has the higher Sharpe Ratio (1.61 vs 1.36), 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.
Find the right allocation for VIMAX and VBTLX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer