MEDIX vs. JAAA

Last updated Apr 1, 2026

Compare and contrast key facts about MFS Emerging Markets Debt Fund (MEDIX) and Janus Henderson AAA CLO ETF (JAAA).

MEDIX is managed by MFS. It was launched on Mar 17, 1998. JAAA is an actively managed fund by Janus Henderson. It was launched on Oct 16, 2020.

Performance

MEDIX vs. JAAA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Emerging Markets Debt Fund (MEDIX) and Janus Henderson AAA CLO ETF (JAAA). The values are adjusted to include any dividend payments, if applicable.

MEDIX vs. JAAA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MEDIX MFS Emerging Markets Debt Fund	-2.03%	12.48%	5.92%	9.42%	-15.97%	-2.40%	5.25%
JAAA Janus Henderson AAA CLO ETF	0.73%	5.16%	7.43%	8.59%	0.49%	1.39%	0.79%

Returns By Period

In the year-to-date period, MEDIX achieves a -2.03% return, which is significantly lower than JAAA's 0.73% return.

MEDIX

• 1D: -0.16%
• 1M: -4.12%
• YTD: -2.03%
• 6M: 1.30%
• 1Y: 8.04%
• 3Y*: 7.84%
• 5Y*: 1.78%
• 10Y*: 3.49%

JAAA

• 1D: 0.12%
• 1M: 0.38%
• YTD: 0.73%
• 6M: 2.11%
• 1Y: 5.05%
• 3Y*: 6.82%
• 5Y*: 4.57%
• 10Y*: —

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

MEDIX vs. JAAA - Expense Ratio Comparison

MEDIX has a 0.81% expense ratio, which is higher than JAAA's 0.21% expense ratio.

MEDIX

MFS Emerging Markets Debt Fund

JAAA

Janus Henderson AAA CLO ETF

Return for Risk

MEDIX vs. JAAA — Risk / Return Rank

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

MEDIX

MEDIX Risk / Return Rank: 88
MEDIX Sharpe Ratio Rank: 91
MEDIX Sortino Ratio Rank: 91
MEDIX Omega Ratio Rank: 90
MEDIX Calmar Ratio Rank: 84
MEDIX Martin Ratio Rank: 83

JAAA

JAAA Risk / Return Rank: 97
JAAA Sharpe Ratio Rank: 97
JAAA Sortino Ratio Rank: 97
JAAA Omega Ratio Rank: 98
JAAA Calmar Ratio Rank: 94
JAAA Martin Ratio Rank: 98

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. JAAA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Emerging Markets Debt Fund (MEDIX) and Janus Henderson AAA CLO ETF (JAAA). 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	JAAA	Difference
Sharpe ratio Return per unit of total volatility	1.92	2.80	-0.89
Sortino ratio Return per unit of downside risk	2.64	3.60	-0.96
Omega ratio Gain probability vs. loss probability	1.40	1.91	-0.52
Calmar ratio Return relative to maximum drawdown	2.09	3.54	-1.45
Martin ratio Return relative to average drawdown	8.43	24.70	-16.27
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. JAAA - Sharpe Ratio Comparison

The current MEDIX Sharpe Ratio is 1.92, which is lower than the JAAA Sharpe Ratio of 2.80. The chart below compares the historical Sharpe Ratios of MEDIX and JAAA, 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	JAAA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.92	2.80	-0.89
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.31	2.71	-2.41
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.60	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.96	2.70	-1.74

Correlation

The correlation between MEDIX and JAAA is 0.10, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

MEDIX vs. JAAA - Dividend Comparison

MEDIX's dividend yield for the trailing twelve months is around 4.80%, less than JAAA's 5.62% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MEDIX MFS Emerging Markets Debt Fund	4.80%	5.22%	5.68%	4.90%	5.51%	4.33%	4.07%	4.59%	4.87%	4.46%	4.86%	5.25%
JAAA Janus Henderson AAA CLO ETF	5.62%	5.30%	6.35%	6.11%	2.74%	1.21%	0.26%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

MEDIX vs. JAAA - Drawdown Comparison

The maximum MEDIX drawdown since its inception was -35.31%, which is greater than JAAA's maximum drawdown of -2.64%. Use the drawdown chart below to compare losses from any high point for MEDIX and JAAA.

Drawdown Indicators

	MEDIX	JAAA	Difference
Max Drawdown Largest peak-to-trough decline	-35.31%	-2.64%	-32.67%
Max Drawdown (1Y) Largest decline over 1 year	-4.12%	-1.46%	-2.66%
Max Drawdown (5Y) Largest decline over 5 years	-27.40%	-2.64%	-24.76%
Max Drawdown (10Y) Largest decline over 10 years	-27.40%	—	—
Current Drawdown Current decline from peak	-4.12%	-0.03%	-4.09%
Average Drawdown Average peak-to-trough decline	-4.46%	-0.26%	-4.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.02%	0.21%	+0.81%

Volatility

MEDIX vs. JAAA - Volatility Comparison

MFS Emerging Markets Debt Fund (MEDIX) has a higher volatility of 1.49% compared to Janus Henderson AAA CLO ETF (JAAA) at 0.41%. This indicates that MEDIX's price experiences larger fluctuations and is considered to be riskier than JAAA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MEDIX	JAAA	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.49%	0.41%	+1.08%
Volatility (6M) Calculated over the trailing 6-month period	2.60%	0.68%	+1.92%
Volatility (1Y) Calculated over the trailing 1-year period	4.47%	1.81%	+2.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.83%	1.69%	+4.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.84%	1.67%	+4.17%