VEMPX vs. VMIAX
Compare and contrast key facts about Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) and Vanguard Materials Index Fund Admiral Shares (VMIAX).
VEMPX is managed by Vanguard. It was launched on Jan 14, 2011. VMIAX is managed by Vanguard. It was launched on Feb 11, 2004.
Performance
VEMPX vs. VMIAX - Performance Comparison
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VEMPX vs. VMIAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
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% |
VMIAX Vanguard Materials Index Fund Admiral Shares | 6.53% | 12.26% | 0.45% | 13.69% | -11.77% | 27.15% | 19.37% | 23.59% | -17.38% | 23.68% |
Returns By Period
In the year-to-date period, VEMPX achieves a -4.53% return, which is significantly lower than VMIAX's 6.53% return. Both investments have delivered pretty close results over the past 10 years, with VEMPX having a 10.57% annualized return and VMIAX not far behind at 10.28%.
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%
VMIAX
- 1D
- 0.18%
- 1M
- -9.44%
- YTD
- 6.53%
- 6M
- 8.30%
- 1Y
- 18.48%
- 3Y*
- 9.17%
- 5Y*
- 6.78%
- 10Y*
- 10.28%
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VEMPX vs. VMIAX - Expense Ratio Comparison
VEMPX has a 0.04% expense ratio, which is lower than VMIAX's 0.10% 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
VEMPX vs. VMIAX — Risk / Return Rank
VEMPX
VMIAX
VEMPX vs. VMIAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) and Vanguard Materials Index Fund Admiral Shares (VMIAX). 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.
| VEMPX | VMIAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.72 | 0.92 | -0.19 |
Sortino ratioReturn per unit of downside risk | 1.16 | 1.41 | -0.25 |
Omega ratioGain probability vs. loss probability | 1.16 | 1.18 | -0.02 |
Calmar ratioReturn relative to maximum drawdown | 0.95 | 1.20 | -0.25 |
Martin ratioReturn relative to average drawdown | 3.92 | 4.14 | -0.22 |
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
| VEMPX | VMIAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.72 | 0.92 | -0.19 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.17 | 0.35 | -0.18 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.48 | 0.49 | -0.01 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.49 | 0.38 | +0.11 |
Correlation
The correlation between VEMPX and VMIAX is 0.81, 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
VEMPX vs. VMIAX - Dividend Comparison
VEMPX's dividend yield for the trailing twelve months is around 1.23%, less than VMIAX's 1.45% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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% |
VMIAX Vanguard Materials Index Fund Admiral Shares | 1.45% | 1.56% | 1.70% | 1.72% | 1.98% | 1.33% | 1.67% | 1.94% | 2.02% | 1.63% | 1.73% | 2.31% |
Drawdowns
VEMPX vs. VMIAX - Drawdown Comparison
The maximum VEMPX drawdown since its inception was -41.62%, smaller than the maximum VMIAX drawdown of -62.17%. Use the drawdown chart below to compare losses from any high point for VEMPX and VMIAX.
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Drawdown Indicators
| VEMPX | VMIAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -41.62% | -62.17% | +20.55% |
Max Drawdown (1Y)Largest decline over 1 year | -14.63% | -14.30% | -0.33% |
Max Drawdown (5Y)Largest decline over 5 years | -36.32% | -25.45% | -10.87% |
Max Drawdown (10Y)Largest decline over 10 years | -41.62% | -41.02% | -0.60% |
Current DrawdownCurrent decline from peak | -10.25% | -9.44% | -0.81% |
Average DrawdownAverage peak-to-trough decline | -8.04% | -9.67% | +1.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.54% | 4.13% | -0.59% |
Volatility
VEMPX vs. VMIAX - Volatility Comparison
The current volatility for Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) is 6.02%, while Vanguard Materials Index Fund Admiral Shares (VMIAX) has a volatility of 6.44%. This indicates that VEMPX experiences smaller price fluctuations and is considered to be less risky than VMIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VEMPX | VMIAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.02% | 6.44% | -0.42% |
Volatility (6M)Calculated over the trailing 6-month period | 13.07% | 13.15% | -0.08% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.79% | 21.35% | +1.44% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.33% | 19.59% | +2.74% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.30% | 21.15% | +1.15% |