VEMPX vs. VEMIX

Last updated Apr 1, 2026

Compare and contrast key facts about Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) and Vanguard Emerging Markets Stock Index Fund Institutional Shares (VEMIX).

VEMPX is managed by Vanguard. It was launched on Jan 14, 2011. VEMIX is managed by Vanguard. It was launched on Jun 22, 2000.

Performance

VEMPX vs. VEMIX - 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 Emerging Markets Stock Index Fund Institutional Shares (VEMIX). The values are adjusted to include any dividend payments, if applicable.

VEMPX vs. VEMIX - 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%
VEMIX Vanguard Emerging Markets Stock Index Fund Institutional Shares	-2.51%	24.80%	11.38%	8.85%	-17.75%	0.91%	15.26%	20.35%	-14.55%	31.42%

Returns By Period

In the year-to-date period, VEMPX achieves a -4.53% return, which is significantly lower than VEMIX's -2.51% return. Over the past 10 years, VEMPX has outperformed VEMIX with an annualized return of 10.57%, while VEMIX has yielded a comparatively lower 7.32% annualized return.

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%

VEMIX

• 1D: -0.84%
• 1M: -9.72%
• YTD: -2.51%
• 6M: -1.15%
• 1Y: 19.17%
• 3Y*: 12.50%
• 5Y*: 3.40%
• 10Y*: 7.32%

*Multi-year figures are annualized to reflect compound growth (CAGR)

VEMPX vs. VEMIX - Expense Ratio Comparison

VEMPX has a 0.04% expense ratio, which is lower than VEMIX'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%.

VEMIX

Vanguard Emerging Markets Stock Index Fund Institutional Shares

VEMPX

Vanguard Extended Market Index Fund Institutional Plus Shares

Return for Risk

VEMPX vs. VEMIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

VEMPX

VEMPX Risk / Return Rank: 35
VEMPX Sharpe Ratio Rank: 33
VEMPX Sortino Ratio Rank: 36
VEMPX Omega Ratio Rank: 33
VEMPX Calmar Ratio Rank: 35
VEMPX Martin Ratio Rank: 37

VEMIX

VEMIX Risk / Return Rank: 67
VEMIX Sharpe Ratio Rank: 71
VEMIX Sortino Ratio Rank: 70
VEMIX Omega Ratio Rank: 64
VEMIX Calmar Ratio Rank: 68
VEMIX Martin Ratio Rank: 60

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. VEMIX - 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 Emerging Markets Stock Index Fund Institutional Shares (VEMIX). 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	VEMIX	Difference
Sharpe ratio Return per unit of total volatility	0.72	1.24	-0.51
Sortino ratio Return per unit of downside risk	1.16	1.70	-0.55
Omega ratio Gain probability vs. loss probability	1.16	1.24	-0.08
Calmar ratio Return relative to maximum drawdown	0.95	1.53	-0.59
Martin ratio Return relative to average drawdown	3.92	5.69	-1.77
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. VEMIX - Sharpe Ratio Comparison

The current VEMPX Sharpe Ratio is 0.72, which is lower than the VEMIX Sharpe Ratio of 1.24. The chart below compares the historical Sharpe Ratios of VEMPX and VEMIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	VEMPX	VEMIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.72	1.24	-0.51
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	0.23	-0.06
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.48	0.45	+0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.49	0.33	+0.16

Correlation

The correlation between VEMPX and VEMIX is 0.65, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

VEMPX vs. VEMIX - Dividend Comparison

VEMPX's dividend yield for the trailing twelve months is around 1.23%, less than VEMIX's 2.76% 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%
VEMIX Vanguard Emerging Markets Stock Index Fund Institutional Shares	2.76%	2.77%	3.17%	3.51%	4.09%	2.61%	1.90%	3.23%	2.89%	2.33%	2.55%	2.51%

Drawdowns

VEMPX vs. VEMIX - Drawdown Comparison

The maximum VEMPX drawdown since its inception was -41.62%, smaller than the maximum VEMIX drawdown of -66.43%. Use the drawdown chart below to compare losses from any high point for VEMPX and VEMIX.

Drawdown Indicators

	VEMPX	VEMIX	Difference
Max Drawdown Largest peak-to-trough decline	-41.62%	-66.43%	+24.81%
Max Drawdown (1Y) Largest decline over 1 year	-14.63%	-11.09%	-3.54%
Max Drawdown (5Y) Largest decline over 5 years	-36.32%	-32.56%	-3.76%
Max Drawdown (10Y) Largest decline over 10 years	-41.62%	-36.04%	-5.58%
Current Drawdown Current decline from peak	-10.25%	-11.05%	+0.80%
Average Drawdown Average peak-to-trough decline	-8.04%	-16.08%	+8.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	2.99%	+0.55%

Volatility

VEMPX vs. VEMIX - Volatility Comparison

The current volatility for Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) is 6.02%, while Vanguard Emerging Markets Stock Index Fund Institutional Shares (VEMIX) has a volatility of 6.36%. This indicates that VEMPX experiences smaller price fluctuations and is considered to be less risky than VEMIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VEMPX	VEMIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.02%	6.36%	-0.34%
Volatility (6M) Calculated over the trailing 6-month period	13.07%	10.71%	+2.36%
Volatility (1Y) Calculated over the trailing 1-year period	22.79%	15.25%	+7.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.33%	15.18%	+7.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.30%	16.37%	+5.93%