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VEMPX vs. VIEIX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

VEMPX vs. VIEIX

Last updated Jun 4, 2026

VEMPX (Vanguard Extended Market Index Fund Institutional Plus Shares) and VIEIX (Vanguard Extended Market Index Fund Institutional Shares) are both Mid Cap Blend Equities funds from Vanguard. Over the past 10 years, VEMPX returned 12.21%/yr vs 12.20%/yr for VIEIX. With a 1.00 correlation, they move nearly in lockstep. VEMPX charges 0.04%/yr vs 0.05%/yr for VIEIX.

Performance

VEMPX vs. VIEIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) and Vanguard Extended Market Index Fund Institutional Shares (VIEIX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

As of year-to-date, both investments have demonstrated similar returns, with VEMPX at 14.93% and VIEIX at 14.93%. Both investments have delivered pretty close results over the past 10 years, with VEMPX having a 12.21% annualized return and VIEIX not far behind at 12.20%.

VEMPX

1D
1.07%
1M
5.80%
YTD
14.93%
6M
13.66%
1Y
30.15%
3Y*
20.16%
5Y*
6.93%
10Y*
12.21%

VIEIX

1D
1.07%
1M
5.81%
YTD
14.93%
6M
13.66%
1Y
30.15%
3Y*
20.15%
5Y*
6.92%
10Y*
12.20%
*Multi-year figures are annualized to reflect compound growth (CAGR)

VEMPX vs. VIEIX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
VEMPX
Vanguard Extended Market Index Fund Institutional Plus Shares		14.93%11.43%15.50%26.98%-26.45%12.48%32.24%28.06%-9.35%18.13%
VIEIX
Vanguard Extended Market Index Fund Institutional Shares		14.93%11.42%15.49%26.97%-26.46%12.46%32.24%28.05%-9.36%18.12%

Correlation

The correlation between VEMPX and VIEIX is 1.00 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

1.00

Correlation (3Y)
Calculated over the trailing 3-year period

1.00

Correlation (5Y)
Calculated over the trailing 5-year period

1.00

Correlation (10Y)
Calculated over the trailing 10-year period

1.00

Correlation (All Time)
Calculated using the full available price history since Dec 14, 2010

1.00

The correlation between VEMPX and VIEIX has been stable across timeframes, ranging from 1.00 to 1.00 - a consistent structural relationship.

VEMPX vs. VIEIX - Sectors Allocation Comparison

Sectors
VEMPX
VIEIX

Technology

19.8%
19.8%

Industrials

19.3%
19.3%

Financial Services

14.6%
14.6%

Healthcare

13.3%
13.3%

Consumer Cyclical

9.7%
9.7%

Real Estate

6.0%
6.0%

Energy

5.1%
5.1%

Basic Materials

4.2%
4.2%

Communication Services

3.3%
3.3%

Consumer Defensive

2.7%
2.7%

Utilities

2.0%
2.0%

Technology

VEMPX
19.8%
VIEIX
19.8%

Industrials

VEMPX
19.3%
VIEIX
19.3%

Financial Services

VEMPX
14.6%
VIEIX
14.6%

Healthcare

VEMPX
13.3%
VIEIX
13.3%

Consumer Cyclical

VEMPX
9.7%
VIEIX
9.7%

Real Estate

VEMPX
6.0%
VIEIX
6.0%

Energy

VEMPX
5.1%
VIEIX
5.1%

Basic Materials

VEMPX
4.2%
VIEIX
4.2%

Communication Services

VEMPX
3.3%
VIEIX
3.3%

Consumer Defensive

VEMPX
2.7%
VIEIX
2.7%

Utilities

VEMPX
2.0%
VIEIX
2.0%

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Vanguard Extended Market Index Fund Institutional Plus Shares

Vanguard Extended Market Index Fund Institutional Shares

Often compared with VEMPX:
VEMPX vs. VIIIXVEMPX vs. VMVAXVEMPX vs. VTPSXVEMPX vs. SPYVEMPX vs. VEMIXVEMPX vs. VSIAXVEMPX vs. VMIAX
Often compared with VIEIX:
VIEIX vs. FSMAXVIEIX vs. VOOVIEIX vs. VMCIXVIEIX vs. VEXAXVIEIX vs. VEXRXVIEIX vs. VSCIXVIEIX vs. SPY

Return for Risk

VEMPX vs. VIEIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
VEMPX
VEMPX Risk / Return Rank: 4848
Overall Rank
VEMPX Sharpe Ratio Rank: 4141
Sharpe Ratio Rank
VEMPX Sortino Ratio Rank: 3939
Sortino Ratio Rank
VEMPX Omega Ratio Rank: 3737
Omega Ratio Rank
VEMPX Calmar Ratio Rank: 6666
Calmar Ratio Rank
VEMPX Martin Ratio Rank: 5555
Martin Ratio Rank
VIEIX
VIEIX Risk / Return Rank: 4747
Overall Rank
VIEIX Sharpe Ratio Rank: 4141
Sharpe Ratio Rank
VIEIX Sortino Ratio Rank: 3939
Sortino Ratio Rank
VIEIX Omega Ratio Rank: 3636
Omega Ratio Rank
VIEIX Calmar Ratio Rank: 6666
Calmar Ratio Rank
VIEIX Martin Ratio Rank: 5555
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

VEMPX vs. VIEIX - 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 Extended Market Index Fund Institutional Shares (VIEIX). 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.

VEMPXVIEIXDifference
Sharpe ratioReturn per unit of total volatility
1.87
1.87

0.00

Sortino ratioReturn per unit of downside risk
2.61
2.61

0.00

Omega ratioGain probability vs. loss probability

1.32

1.32

0.00

Calmar ratioReturn relative to maximum drawdown

3.13

3.13

0.00

Martin ratioReturn relative to average drawdown

11.09

11.08

+0.01

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VEMPX vs. VIEIX - Sharpe Ratio Comparison

The current VEMPX Sharpe Ratio is 1.87, which is comparable to the VIEIX Sharpe Ratio of 1.87. The chart below compares the historical Sharpe Ratios of VEMPX and VIEIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Sharpe Ratios by Period

VEMPXVIEIXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

1.87

1.87

0.00

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.31

0.31

0.00

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.55

0.55

0.00

Sharpe Ratio (All Time)

Calculated using the full available price history

0.55

0.40

+0.14

Drawdowns

VEMPX vs. VIEIX - Drawdown Comparison

The maximum VEMPX drawdown since its inception was -41.62%, smaller than the maximum VIEIX drawdown of -58.03%. Use the drawdown chart below to compare losses from any high point for VEMPX and VIEIX.

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Drawdown Indicators

VEMPXVIEIXDifference

Max Drawdown

Largest peak-to-trough decline

-41.62%

-58.03%

+16.41%

Max Drawdown (1Y)

Largest decline over 1 year

-10.25%

-10.25%

0.00%

Max Drawdown (3Y)

Largest decline over 3 years

-26.83%

-26.84%

+0.01%

Max Drawdown (5Y)

Largest decline over 5 years

-36.32%

-36.32%

0.00%

Max Drawdown (10Y)

Largest decline over 10 years

-41.62%

-41.62%

0.00%

Current Drawdown

Current decline from peak

0.00%

0.00%

0.00%

Average Drawdown

Average peak-to-trough decline

-7.97%

-13.84%

+5.87%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.89%

2.89%

0.00%

Volatility

VEMPX vs. VIEIX - Volatility Comparison

Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) and Vanguard Extended Market Index Fund Institutional Shares (VIEIX) have volatilities of 4.69% and 4.69%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

VEMPXVIEIXDifference

Volatility (1M)

Calculated over the trailing 1-month period

4.69%

4.69%

0.00%

Volatility (6M)

Calculated over the trailing 6-month period

12.46%

12.46%

0.00%

Volatility (1Y)

Calculated over the trailing 1-year period

17.17%

17.17%

0.00%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

22.34%

22.34%

0.00%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

22.36%

22.36%

0.00%

VEMPX vs. VIEIX - Expense Ratio Comparison

VEMPX has a 0.04% expense ratio, which is lower than VIEIX's 0.05% 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%.

Dividends

VEMPX vs. VIEIX - Dividend Comparison

VEMPX's dividend yield for the trailing twelve months is around 1.02%, which matches VIEIX's 1.01% yield.

PositionTTM20252024202320222021202020192018201720162015
VEMPX
Vanguard Extended Market Index Fund Institutional Plus Shares		1.02%1.15%1.11%1.27%1.17%1.15%1.09%1.32%1.68%1.27%1.46%1.39%
VIEIX
Vanguard Extended Market Index Fund Institutional Shares		1.01%1.14%1.10%1.26%1.16%1.14%1.08%1.31%1.67%1.27%1.45%1.37%

Frequently Asked Questions

With a correlation of 1.00, VEMPX and VIEIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

VIEIX has higher volatility (4.69%) compared to VEMPX (4.69%). In terms of maximum drawdown, VEMPX dropped -41.62% vs VIEIX's -58.03%.

VEMPX currently has the higher Sharpe Ratio (1.87 vs 1.87), 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.

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