VIEIX vs. VMCPX
Compare and contrast key facts about Vanguard Extended Market Index Fund Institutional Shares (VIEIX) and Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX).
VIEIX is managed by Vanguard. It was launched on Jul 7, 1997. VMCPX is managed by Vanguard. It was launched on Dec 15, 2010.
Performance
VIEIX vs. VMCPX - Performance Comparison
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VIEIX vs. VMCPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VIEIX Vanguard Extended Market Index Fund Institutional Shares | -1.26% | 11.42% | 15.49% | 26.97% | -26.46% | 12.46% | 32.24% | 28.05% | -9.36% | 18.12% |
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares | -0.63% | 11.70% | 14.68% | 16.55% | -18.68% | 24.54% | 18.20% | 31.06% | -9.23% | 19.28% |
Returns By Period
In the year-to-date period, VIEIX achieves a -1.26% return, which is significantly lower than VMCPX's -0.63% return. Both investments have delivered pretty close results over the past 10 years, with VIEIX having a 10.93% annualized return and VMCPX not far behind at 10.68%.
VIEIX
- 1D
- 3.43%
- 1M
- -5.36%
- YTD
- -1.26%
- 6M
- -1.37%
- 1Y
- 20.15%
- 3Y*
- 15.08%
- 5Y*
- 4.00%
- 10Y*
- 10.93%
VMCPX
- 1D
- 2.23%
- 1M
- -5.78%
- YTD
- -0.63%
- 6M
- -1.34%
- 1Y
- 12.42%
- 3Y*
- 12.62%
- 5Y*
- 6.68%
- 10Y*
- 10.68%
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VIEIX vs. VMCPX - Expense Ratio Comparison
VIEIX has a 0.05% expense ratio, which is higher than VMCPX'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%.
Return for Risk
VIEIX vs. VMCPX — Risk / Return Rank
VIEIX
VMCPX
VIEIX vs. VMCPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Extended Market Index Fund Institutional Shares (VIEIX) and Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX). 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.
| VIEIX | VMCPX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.91 | 0.73 | +0.18 |
Sortino ratioReturn per unit of downside risk | 1.41 | 1.12 | +0.29 |
Omega ratioGain probability vs. loss probability | 1.19 | 1.16 | +0.03 |
Calmar ratioReturn relative to maximum drawdown | 1.39 | 1.06 | +0.34 |
Martin ratioReturn relative to average drawdown | 5.71 | 4.87 | +0.84 |
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
| VIEIX | VMCPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.91 | 0.73 | +0.18 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.18 | 0.38 | -0.20 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.49 | 0.57 | -0.08 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.38 | 0.59 | -0.21 |
Correlation
The correlation between VIEIX and VMCPX is 0.96, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
VIEIX vs. VMCPX - Dividend Comparison
VIEIX's dividend yield for the trailing twelve months is around 1.18%, less than VMCPX's 1.52% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VIEIX Vanguard Extended Market Index Fund Institutional Shares | 1.18% | 1.14% | 1.10% | 1.26% | 1.16% | 1.14% | 1.08% | 1.31% | 1.67% | 1.27% | 1.45% | 1.37% |
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares | 1.52% | 1.53% | 1.50% | 1.52% | 1.61% | 1.13% | 1.45% | 1.49% | 1.84% | 1.37% | 1.47% | 1.50% |
Drawdowns
VIEIX vs. VMCPX - Drawdown Comparison
The maximum VIEIX drawdown since its inception was -58.03%, which is greater than VMCPX's maximum drawdown of -39.30%. Use the drawdown chart below to compare losses from any high point for VIEIX and VMCPX.
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Drawdown Indicators
| VIEIX | VMCPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.03% | -39.30% | -18.73% |
Max Drawdown (1Y)Largest decline over 1 year | -14.63% | -12.77% | -1.86% |
Max Drawdown (5Y)Largest decline over 5 years | -36.32% | -27.54% | -8.78% |
Max Drawdown (10Y)Largest decline over 10 years | -41.62% | -39.30% | -2.32% |
Current DrawdownCurrent decline from peak | -7.17% | -6.08% | -1.09% |
Average DrawdownAverage peak-to-trough decline | -13.91% | -5.26% | -8.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.57% | 2.77% | +0.80% |
Volatility
VIEIX vs. VMCPX - Volatility Comparison
Vanguard Extended Market Index Fund Institutional Shares (VIEIX) has a higher volatility of 7.01% compared to Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX) at 4.96%. This indicates that VIEIX's price experiences larger fluctuations and is considered to be riskier than VMCPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VIEIX | VMCPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.01% | 4.96% | +2.05% |
Volatility (6M)Calculated over the trailing 6-month period | 13.51% | 9.67% | +3.84% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.99% | 17.68% | +5.31% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.38% | 17.66% | +4.72% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.33% | 18.91% | +3.42% |