MEDIX vs. VEGBX

Last updated Apr 3, 2026

Compare and contrast key facts about MFS Emerging Markets Debt Fund (MEDIX) and Vanguard Emerging Markets Bond Fund Admiral Shares (VEGBX).

MEDIX is managed by MFS. It was launched on Mar 17, 1998. VEGBX is managed by Vanguard. It was launched on Dec 6, 2017.

Performance

MEDIX vs. VEGBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Emerging Markets Debt Fund (MEDIX) and Vanguard Emerging Markets Bond Fund Admiral Shares (VEGBX). The values are adjusted to include any dividend payments, if applicable.

MEDIX vs. VEGBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MEDIX MFS Emerging Markets Debt Fund	-1.24%	12.48%	5.92%	9.42%	-15.97%	-2.40%	8.01%	14.12%	-4.99%	8.04%
VEGBX Vanguard Emerging Markets Bond Fund Admiral Shares	-1.23%	14.46%	7.60%	13.81%	-13.02%	-1.44%	15.18%	17.87%	-0.66%	11.65%

Returns By Period

The year-to-date returns for both investments are quite close, with MEDIX having a -1.24% return and VEGBX slightly higher at -1.23%.

MEDIX

• 1D: 0.48%
• 1M: -2.35%
• YTD: -1.24%
• 6M: 1.80%
• 1Y: 8.74%
• 3Y*: 8.13%
• 5Y*: 1.90%
• 10Y*: 3.58%

VEGBX

• 1D: 0.16%
• 1M: -2.25%
• YTD: -1.23%
• 6M: 1.88%
• 1Y: 9.88%
• 3Y*: 10.52%
• 5Y*: 4.29%
• 10Y*: —

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

MEDIX vs. VEGBX - Expense Ratio Comparison

MEDIX has a 0.81% expense ratio, which is higher than VEGBX's 0.40% expense ratio.

MEDIX

MFS Emerging Markets Debt Fund

VEGBX

Vanguard Emerging Markets Bond Fund Admiral Shares

Return for Risk

MEDIX vs. VEGBX — Risk / Return Rank

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

MEDIX

MEDIX Risk / Return Rank: 83
MEDIX Sharpe Ratio Rank: 89
MEDIX Sortino Ratio Rank: 89
MEDIX Omega Ratio Rank: 88
MEDIX Calmar Ratio Rank: 78
MEDIX Martin Ratio Rank: 72

VEGBX

VEGBX Risk / Return Rank: 89
VEGBX Sharpe Ratio Rank: 90
VEGBX Sortino Ratio Rank: 92
VEGBX Omega Ratio Rank: 88
VEGBX Calmar Ratio Rank: 85
VEGBX Martin Ratio Rank: 88

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.

MEDIX vs. VEGBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Emerging Markets Debt Fund (MEDIX) and Vanguard Emerging Markets Bond Fund Admiral Shares (VEGBX). 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.

	MEDIX	VEGBX	Difference
Sharpe ratio Return per unit of total volatility	1.94	1.98	-0.04
Sortino ratio Return per unit of downside risk	2.68	2.84	-0.16
Omega ratio Gain probability vs. loss probability	1.40	1.40	0.00
Calmar ratio Return relative to maximum drawdown	2.17	2.44	-0.27
Martin ratio Return relative to average drawdown	8.34	10.52	-2.18
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MEDIX vs. VEGBX - Sharpe Ratio Comparison

The current MEDIX Sharpe Ratio is 1.94, which is comparable to the VEGBX Sharpe Ratio of 1.98. The chart below compares the historical Sharpe Ratios of MEDIX and VEGBX, 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

	MEDIX	VEGBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.94	1.98	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.33	0.69	-0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.61	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.96	1.03	-0.07

Correlation

The correlation between MEDIX and VEGBX is 0.88, 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

MEDIX vs. VEGBX - Dividend Comparison

MEDIX's dividend yield for the trailing twelve months is around 4.76%, less than VEGBX's 5.79% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MEDIX MFS Emerging Markets Debt Fund	4.76%	5.22%	5.68%	4.90%	5.51%	4.33%	4.07%	4.59%	4.87%	4.46%	4.86%	5.25%
VEGBX Vanguard Emerging Markets Bond Fund Admiral Shares	5.79%	6.34%	7.02%	7.20%	5.61%	5.14%	4.62%	6.42%	5.00%	0.39%	0.00%	0.00%

Drawdowns

MEDIX vs. VEGBX - Drawdown Comparison

The maximum MEDIX drawdown since its inception was -35.31%, which is greater than VEGBX's maximum drawdown of -24.27%. Use the drawdown chart below to compare losses from any high point for MEDIX and VEGBX.

Drawdown Indicators

	MEDIX	VEGBX	Difference
Max Drawdown Largest peak-to-trough decline	-35.31%	-24.27%	-11.04%
Max Drawdown (1Y) Largest decline over 1 year	-4.12%	-3.89%	-0.23%
Max Drawdown (5Y) Largest decline over 5 years	-27.40%	-24.27%	-3.13%
Max Drawdown (10Y) Largest decline over 10 years	-27.40%	—	—
Current Drawdown Current decline from peak	-3.34%	-3.19%	-0.15%
Average Drawdown Average peak-to-trough decline	-4.46%	-3.90%	-0.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.07%	0.98%	+0.09%

Volatility

MEDIX vs. VEGBX - Volatility Comparison

The current volatility for MFS Emerging Markets Debt Fund (MEDIX) is 1.62%, while Vanguard Emerging Markets Bond Fund Admiral Shares (VEGBX) has a volatility of 2.08%. This indicates that MEDIX experiences smaller price fluctuations and is considered to be less risky than VEGBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MEDIX	VEGBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.62%	2.08%	-0.46%
Volatility (6M) Calculated over the trailing 6-month period	2.64%	2.86%	-0.22%
Volatility (1Y) Calculated over the trailing 1-year period	4.47%	4.98%	-0.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.83%	6.27%	-0.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.84%	6.37%	-0.53%