VMMSX vs. DEMIX

Last updated Aug 2, 2026

VMMSX (Vanguard Emerging Markets Select Stock Fund) and DEMIX (Delaware Emerging Markets Fund) are both Emerging Markets Equities funds. Over the past 10 years, VMMSX returned 9.09%/yr vs 18.00%/yr for DEMIX. Their correlation of 0.89 means they have usually moved in the same direction. VMMSX charges 0.84%/yr vs 1.26%/yr for DEMIX.

Performance

VMMSX vs. DEMIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Emerging Markets Select Stock Fund (VMMSX) and Delaware Emerging Markets Fund (DEMIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VMMSX achieves a 13.15% return, which is significantly lower than DEMIX's 68.59% return. Over the past 10 years, VMMSX has underperformed DEMIX with an annualized return of 9.09%, while DEMIX has yielded a comparatively higher 18.00% annualized return.

VMMSX

• 1D: 2.98%
• 1M: -0.35%
• 6M: 3.08%
• YTD: 13.15%
• 1Y: 32.23%
• 3Y*: 16.15%
• 5Y*: 7.04%
• 10Y*: 9.09%
• ALL TIME*: 5.42%

DEMIX

• 1D: 8.34%
• 1M: -18.22%
• 6M: 34.53%
• YTD: 68.59%
• 1Y: 156.06%
• 3Y*: 51.27%
• 5Y*: 23.17%
• 10Y*: 18.00%
• ALL TIME*: 10.80%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
DEMIX Delaware Emerging Markets Fund	$0.00	$0.00	$0.00
VMMSX Vanguard Emerging Markets Select Stock Fund	$0.00	$0.00	$0.00

VMMSX vs. DEMIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VMMSX Vanguard Emerging Markets Select Stock Fund	13.15%	35.68%	5.91%	10.58%	-18.15%	-1.40%	15.79%	21.42%	-12.53%	32.01%
DEMIX Delaware Emerging Markets Fund	68.59%	86.79%	6.52%	17.59%	-28.66%	-2.08%	26.09%	24.33%	-17.10%	41.98%

Correlation

The correlation between VMMSX and DEMIX is 0.74, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.74
Correlation (3Y) Balances recent behavior with more history.	0.75
Correlation (5Y) Shows whether the relationship held over a longer period.	0.82
Correlation (10Y) Provides a long-term view across more market conditions.	0.87
Correlation (All Time) Calculated using the full available price history since Jun 27, 2011	0.89

The correlation between VMMSX and DEMIX shifts across timeframes, from 0.74 (1 year) to 0.89 (all time), reflecting how their relationship changes across market environments.

Return for Risk

VMMSX vs. DEMIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

VMMSX

VMMSX Risk / Return Rank: 63
VMMSX Sharpe Ratio Rank: 66
VMMSX Sortino Ratio Rank: 59
VMMSX Omega Ratio Rank: 66
VMMSX Calmar Ratio Rank: 69
VMMSX Martin Ratio Rank: 57

DEMIX

DEMIX Risk / Return Rank: 91
DEMIX Sharpe Ratio Rank: 97
DEMIX Sortino Ratio Rank: 82
DEMIX Omega Ratio Rank: 87
DEMIX Calmar Ratio Rank: 95
DEMIX Martin Ratio Rank: 96

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

VMMSX vs. DEMIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Emerging Markets Select Stock Fund (VMMSX) and Delaware Emerging Markets Fund (DEMIX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	VMMSX	DEMIX	Difference
Sharpe ratio: Return per unit of total volatility	1.54	2.80	-1.26
Sortino ratio: Return per unit of downside risk	2.06	2.87	-0.81
Omega ratio: Gain probability vs. loss probability	1.28	1.43	-0.15
Calmar ratio: Return relative to maximum drawdown	2.19	4.06	-1.86
Martin ratio: Return relative to average drawdown	7.30	16.90	-9.60

VMMSX vs. DEMIX - Sharpe Ratio Comparison

The current VMMSX Sharpe Ratio is 1.54, which is lower than the DEMIX Sharpe Ratio of 2.80. The chart below compares the historical Sharpe Ratios of VMMSX and DEMIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

VMMSX vs. DEMIX - Drawdown Comparison

The maximum VMMSX drawdown since its inception was -39.28%, smaller than the maximum DEMIX drawdown of -63.15%. Use the drawdown chart below to compare losses from any high point for VMMSX and DEMIX.

Drawdown Indicators

	VMMSX	DEMIX	Difference
Max Drawdown Largest peak-to-trough decline	-39.28%	-63.15%	+23.87%
Max Drawdown (1Y) Largest decline over 1 year	-13.46%	-36.51%	+23.05%
Max Drawdown (3Y) Largest decline over 3 years	-18.37%	-36.51%	+18.14%
Max Drawdown (5Y) Largest decline over 5 years	-34.41%	-38.47%	+4.06%
Max Drawdown (10Y) Largest decline over 10 years	-38.82%	-46.29%	+7.47%
Current Drawdown Current decline from peak	-6.45%	-31.22%	+24.77%
Average Drawdown Average peak-to-trough decline	-13.32%	-18.43%	+5.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.04%	8.73%	-4.69%

Volatility

VMMSX vs. DEMIX - Volatility Comparison

The current volatility for Vanguard Emerging Markets Select Stock Fund (VMMSX) is 6.75%, while Delaware Emerging Markets Fund (DEMIX) has a volatility of 25.06%. This indicates that VMMSX experiences smaller price fluctuations and is considered to be less risky than DEMIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VMMSX	DEMIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.75%	25.06%	-18.31%
Volatility (6M) Calculated over the trailing 6-month period	16.85%	49.51%	-32.66%
Volatility (1Y) Calculated over the trailing 1-year period	19.22%	52.91%	-33.69%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.19%	30.10%	-11.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.50%	25.79%	-7.29%

VMMSX vs. DEMIX - Expense Ratio Comparison

VMMSX has a 0.84% expense ratio, which is lower than DEMIX's 1.26% expense ratio.

Dividends

VMMSX vs. DEMIX - Dividend Comparison

VMMSX's dividend yield for the trailing twelve months is around 2.05%, less than DEMIX's 11.25% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DEMIX Delaware Emerging Markets Fund	11.25%	18.97%	1.99%	2.95%	1.89%	3.42%	0.87%	0.80%	0.65%	1.80%	0.94%	0.30%
VMMSX Vanguard Emerging Markets Select Stock Fund	2.05%	2.32%	3.33%	3.05%	3.71%	6.80%	1.04%	2.04%	2.53%	1.54%	1.44%	1.87%

Frequently Asked Questions

Can I hold both VMMSX and DEMIX in my portfolio?

VMMSX and DEMIX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VMMSX or DEMIX?

DEMIX has higher volatility (25.06%) compared to VMMSX (6.75%). In terms of maximum drawdown, VMMSX dropped -39.28% vs DEMIX's -63.15%.

Which has better risk-adjusted returns?

DEMIX currently has the higher Sharpe Ratio (2.80 vs 1.54), 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.