MEDIX vs. OEGYX

Last updated Jun 4, 2026

MEDIX (MFS Emerging Markets Debt Fund) and OEGYX (Invesco Discovery Mid Cap Growth Fund) are both mutual funds - MEDIX is a Emerging Markets Bonds fund managed by MFS, while OEGYX is a Mid Cap Growth Equities fund managed by Invesco. Over the past 10 years, MEDIX returned 3.73%/yr vs 13.79%/yr for OEGYX. At a 0.23 correlation, their price movements are largely independent. MEDIX charges 0.81%/yr vs 0.78%/yr for OEGYX.

Performance

MEDIX vs. OEGYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Emerging Markets Debt Fund (MEDIX) and Invesco Discovery Mid Cap Growth Fund (OEGYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MEDIX achieves a 2.46% return, which is significantly lower than OEGYX's 26.11% return. Over the past 10 years, MEDIX has underperformed OEGYX with an annualized return of 3.73%, while OEGYX has yielded a comparatively higher 13.79% annualized return.

MEDIX

• 1D: 0.16%
• 1M: 1.09%
• YTD: 2.46%
• 6M: 3.09%
• 1Y: 12.40%
• 3Y*: 9.48%
• 5Y*: 2.13%
• 10Y*: 3.73%

OEGYX

• 1D: 2.37%
• 1M: 5.88%
• YTD: 26.11%
• 6M: 23.35%
• 1Y: 33.88%
• 3Y*: 21.12%
• 5Y*: 8.35%
• 10Y*: 13.79%

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

MEDIX vs. OEGYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MEDIX MFS Emerging Markets Debt Fund	2.46%	12.48%	5.92%	9.42%	-15.97%	-2.40%	8.01%	14.12%	-4.99%	9.64%
OEGYX Invesco Discovery Mid Cap Growth Fund	26.11%	5.08%	24.38%	13.24%	-30.92%	18.76%	40.53%	39.33%	-6.50%	28.34%

Correlation

The correlation between MEDIX and OEGYX is 0.31, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.31
Correlation (3Y) Calculated over the trailing 3-year period	0.26
Correlation (5Y) Calculated over the trailing 5-year period	0.29
Correlation (10Y) Calculated over the trailing 10-year period	0.26
Correlation (All Time) Calculated using the full available price history since Nov 1, 2000	0.23

Return for Risk

MEDIX vs. OEGYX — Risk / Return Rank

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

MEDIX

MEDIX Risk / Return Rank: 84
MEDIX Sharpe Ratio Rank: 94
MEDIX Sortino Ratio Rank: 96
MEDIX Omega Ratio Rank: 93
MEDIX Calmar Ratio Rank: 65
MEDIX Martin Ratio Rank: 70

OEGYX

OEGYX Risk / Return Rank: 48
OEGYX Sharpe Ratio Rank: 36
OEGYX Sortino Ratio Rank: 32
OEGYX Omega Ratio Rank: 32
OEGYX Calmar Ratio Rank: 76
OEGYX Martin Ratio Rank: 64

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. OEGYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Emerging Markets Debt Fund (MEDIX) and Invesco Discovery Mid Cap Growth Fund (OEGYX). 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	OEGYX	Difference
Sharpe ratio Return per unit of total volatility	3.25	1.72	+1.53
Sortino ratio Return per unit of downside risk	5.40	2.35	+3.05
Omega ratio Gain probability vs. loss probability	1.70	1.30	+0.40
Calmar ratio Return relative to maximum drawdown	3.09	3.45	-0.36
Martin ratio Return relative to average drawdown	13.52	12.51	+1.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MEDIX vs. OEGYX - Sharpe Ratio Comparison

The current MEDIX Sharpe Ratio is 3.25, which is higher than the OEGYX Sharpe Ratio of 1.72. The chart below compares the historical Sharpe Ratios of MEDIX and OEGYX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MEDIX	OEGYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.25	1.72	+1.53
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.36	0.38	-0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.64	0.63	+0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.98	0.39	+0.58

Drawdowns

MEDIX vs. OEGYX - Drawdown Comparison

The maximum MEDIX drawdown since its inception was -35.31%, smaller than the maximum OEGYX drawdown of -53.44%. Use the drawdown chart below to compare losses from any high point for MEDIX and OEGYX.

Drawdown Indicators

	MEDIX	OEGYX	Difference
Max Drawdown Largest peak-to-trough decline	-35.31%	-53.44%	+18.13%
Max Drawdown (1Y) Largest decline over 1 year	-4.12%	-10.14%	+6.02%
Max Drawdown (3Y) Largest decline over 3 years	-7.48%	-28.58%	+21.10%
Max Drawdown (5Y) Largest decline over 5 years	-27.40%	-39.25%	+11.85%
Max Drawdown (10Y) Largest decline over 10 years	-27.40%	-39.25%	+11.85%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-4.44%	-12.50%	+8.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.94%	2.79%	-1.85%

Volatility

MEDIX vs. OEGYX - Volatility Comparison

The current volatility for MFS Emerging Markets Debt Fund (MEDIX) is 1.39%, while Invesco Discovery Mid Cap Growth Fund (OEGYX) has a volatility of 6.46%. This indicates that MEDIX experiences smaller price fluctuations and is considered to be less risky than OEGYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MEDIX	OEGYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.39%	6.46%	-5.07%
Volatility (6M) Calculated over the trailing 6-month period	3.22%	16.63%	-13.41%
Volatility (1Y) Calculated over the trailing 1-year period	3.92%	20.32%	-16.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.89%	22.10%	-16.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.87%	22.05%	-16.18%

MEDIX vs. OEGYX - Expense Ratio Comparison

MEDIX has a 0.81% expense ratio, which is higher than OEGYX's 0.78% expense ratio.

Dividends

MEDIX vs. OEGYX - Dividend Comparison

MEDIX's dividend yield for the trailing twelve months is around 5.04%, less than OEGYX's 5.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MEDIX MFS Emerging Markets Debt Fund	5.04%	5.22%	5.68%	4.90%	5.51%	4.33%	4.07%	4.59%	4.87%	4.46%	4.86%	5.25%
OEGYX Invesco Discovery Mid Cap Growth Fund	5.91%	7.45%	4.13%	0.00%	0.00%	16.02%	3.08%	3.85%	9.31%	8.34%	0.81%	3.88%

Frequently Asked Questions

Can I hold both MEDIX and OEGYX in my portfolio?

MEDIX and OEGYX have a correlation of 0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MEDIX or OEGYX?

OEGYX has higher volatility (6.46%) compared to MEDIX (1.39%). In terms of maximum drawdown, MEDIX dropped -35.31% vs OEGYX's -53.44%.

Which has better risk-adjusted returns?

MEDIX currently has the higher Sharpe Ratio (3.25 vs 1.72), 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.