VMCPX vs. VEMPX
Compare and contrast key facts about Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX) and Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX).
VMCPX is managed by Vanguard. It was launched on Dec 15, 2010. VEMPX is managed by Vanguard. It was launched on Jan 14, 2011.
Performance
VMCPX vs. VEMPX - Performance Comparison
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VMCPX vs. VEMPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares | -2.79% | 11.70% | 14.68% | 16.55% | -18.68% | 24.54% | 18.20% | 31.06% | -9.23% | 19.28% |
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares | -4.53% | 11.43% | 15.50% | 26.98% | -26.45% | 12.48% | 32.24% | 28.06% | -9.35% | 18.13% |
Returns By Period
In the year-to-date period, VMCPX achieves a -2.79% return, which is significantly higher than VEMPX's -4.53% return. Both investments have delivered pretty close results over the past 10 years, with VMCPX having a 10.44% annualized return and VEMPX not far ahead at 10.57%.
VMCPX
- 1D
- -0.66%
- 1M
- -7.87%
- YTD
- -2.79%
- 6M
- -3.58%
- 1Y
- 10.32%
- 3Y*
- 11.80%
- 5Y*
- 6.52%
- 10Y*
- 10.44%
VEMPX
- 1D
- -1.03%
- 1M
- -7.75%
- YTD
- -4.53%
- 6M
- -4.38%
- 1Y
- 16.81%
- 3Y*
- 13.80%
- 5Y*
- 3.67%
- 10Y*
- 10.57%
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VMCPX vs. VEMPX - Expense Ratio Comparison
VMCPX has a 0.03% expense ratio, which is lower than VEMPX's 0.04% expense ratio. Despite the difference, 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
VMCPX vs. VEMPX — Risk / Return Rank
VMCPX
VEMPX
VMCPX vs. VEMPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX) and Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX). 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.
| VMCPX | VEMPX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.63 | 0.72 | -0.09 |
Sortino ratioReturn per unit of downside risk | 0.99 | 1.16 | -0.17 |
Omega ratioGain probability vs. loss probability | 1.14 | 1.16 | -0.02 |
Calmar ratioReturn relative to maximum drawdown | 0.73 | 0.95 | -0.22 |
Martin ratioReturn relative to average drawdown | 3.40 | 3.92 | -0.52 |
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
| VMCPX | VEMPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.63 | 0.72 | -0.09 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.37 | 0.17 | +0.21 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.55 | 0.48 | +0.08 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.59 | 0.49 | +0.10 |
Correlation
The correlation between VMCPX and VEMPX 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
VMCPX vs. VEMPX - Dividend Comparison
VMCPX's dividend yield for the trailing twelve months is around 1.55%, more than VEMPX's 1.23% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares | 1.55% | 1.53% | 1.50% | 1.52% | 1.61% | 1.13% | 1.45% | 1.49% | 1.84% | 1.37% | 1.47% | 1.50% |
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares | 1.23% | 1.15% | 1.11% | 1.27% | 1.17% | 1.15% | 1.09% | 1.32% | 1.68% | 1.27% | 1.46% | 1.39% |
Drawdowns
VMCPX vs. VEMPX - Drawdown Comparison
The maximum VMCPX drawdown since its inception was -39.30%, smaller than the maximum VEMPX drawdown of -41.62%. Use the drawdown chart below to compare losses from any high point for VMCPX and VEMPX.
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Drawdown Indicators
| VMCPX | VEMPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -39.30% | -41.62% | +2.32% |
Max Drawdown (1Y)Largest decline over 1 year | -12.77% | -14.63% | +1.86% |
Max Drawdown (5Y)Largest decline over 5 years | -27.54% | -36.32% | +8.78% |
Max Drawdown (10Y)Largest decline over 10 years | -39.30% | -41.62% | +2.32% |
Current DrawdownCurrent decline from peak | -8.13% | -10.25% | +2.12% |
Average DrawdownAverage peak-to-trough decline | -5.26% | -8.04% | +2.78% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.74% | 3.54% | -0.80% |
Volatility
VMCPX vs. VEMPX - Volatility Comparison
The current volatility for Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX) is 4.23%, while Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) has a volatility of 6.02%. This indicates that VMCPX experiences smaller price fluctuations and is considered to be less risky than VEMPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMCPX | VEMPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.23% | 6.02% | -1.79% |
Volatility (6M)Calculated over the trailing 6-month period | 9.43% | 13.07% | -3.64% |
Volatility (1Y)Calculated over the trailing 1-year period | 17.58% | 22.79% | -5.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.63% | 22.33% | -4.70% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.90% | 22.30% | -3.40% |