MUIIX vs. CDX

Last updated Jul 7, 2026

MUIIX (Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio) and CDX (Simplify High Yield ETF) are both funds - MUIIX is a Ultrashort Bond fund managed by Morgan Stanley, while CDX is a High Yield Bonds fund actively managed by Simplify. Over the past 3 years, MUIIX returned 4.43%/yr vs 8.20%/yr for CDX. At a correlation of -0.00, they often move in opposite directions. MUIIX charges 0.35%/yr vs 0.25%/yr for CDX.

Performance

MUIIX vs. CDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio (MUIIX) and Simplify High Yield ETF (CDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MUIIX achieves a 1.78% return, which is significantly higher than CDX's -2.12% return.

MUIIX

• 1D: 0.00%
• 1M: 0.31%
• 6M: 1.78%
• YTD: 1.78%
• 1Y: 4.07%
• 3Y*: 4.43%
• 5Y*: 3.29%
• 10Y*: —

CDX

• 1D: 0.33%
• 1M: 0.06%
• 6M: -1.81%
• YTD: -2.12%
• 1Y: -1.83%
• 3Y*: 8.20%
• 5Y*: —
• 10Y*: —

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

MUIIX vs. CDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
MUIIX Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio	1.78%	4.47%	4.94%	4.17%	1.09%
CDX Simplify High Yield ETF	-2.12%	9.51%	7.71%	12.74%	-8.26%

Correlation

The correlation between MUIIX and CDX is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.15
Correlation (3Y) Calculated over the trailing 3-year period	-0.02
Correlation (All Time) Calculated using the full available price history since Feb 15, 2022	-0.00

The correlation between MUIIX and CDX shifts across timeframes, from -0.02 (3 years) to 0.15 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

MUIIX vs. CDX — Risk / Return Rank

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

MUIIX

MUIIX Risk / Return Rank: 99
MUIIX Sharpe Ratio Rank: 98
MUIIX Sortino Ratio Rank: 100
MUIIX Omega Ratio Rank: 100
MUIIX Calmar Ratio Rank: 100
MUIIX Martin Ratio Rank: 100

CDX

CDX Risk / Return Rank: 6
CDX Sharpe Ratio Rank: 6
CDX Sortino Ratio Rank: 6
CDX Omega Ratio Rank: 6
CDX Calmar Ratio Rank: 6
CDX Martin Ratio Rank: 5

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.

MUIIX vs. CDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio (MUIIX) and Simplify High Yield ETF (CDX). 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.

	MUIIX	CDX	Difference
Sharpe ratio: Return per unit of total volatility	3.37	-0.32	+3.69
Sortino ratio: Return per unit of downside risk	15.91	-0.41	+16.32
Omega ratio: Gain probability vs. loss probability	7.48	0.95	+6.53
Calmar ratio: Return relative to maximum drawdown	39.75	-0.44	+40.19
Martin ratio: Return relative to average drawdown	140.80	-0.94	+141.74

MUIIX vs. CDX - Sharpe Ratio Comparison

The current MUIIX Sharpe Ratio is 3.37, which is higher than the CDX Sharpe Ratio of -0.32. The chart below compares the historical Sharpe Ratios of MUIIX and CDX, 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

MUIIX vs. CDX - Drawdown Comparison

The maximum MUIIX drawdown since its inception was -1.20%, smaller than the maximum CDX drawdown of -13.24%. Use the drawdown chart below to compare losses from any high point for MUIIX and CDX.

Drawdown Indicators

	MUIIX	CDX	Difference
Max Drawdown Largest peak-to-trough decline	-1.20%	-13.24%	+12.04%
Max Drawdown (1Y) Largest decline over 1 year	-0.10%	-4.18%	+4.08%
Max Drawdown (3Y) Largest decline over 3 years	-1.20%	-8.88%	+7.68%
Max Drawdown (5Y) Largest decline over 5 years	-1.20%	—	—
Current Drawdown Current decline from peak	0.00%	-7.10%	+7.10%
Average Drawdown Average peak-to-trough decline	-0.06%	-4.38%	+4.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	1.95%	-1.91%

Volatility

MUIIX vs. CDX - Volatility Comparison

The current volatility for Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio (MUIIX) is 0.39%, while Simplify High Yield ETF (CDX) has a volatility of 1.74%. This indicates that MUIIX experiences smaller price fluctuations and is considered to be less risky than CDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MUIIX	CDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.39%	1.74%	-1.35%
Volatility (6M) Calculated over the trailing 6-month period	0.87%	4.93%	-4.06%
Volatility (1Y) Calculated over the trailing 1-year period	1.18%	5.78%	-4.60%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.60%	11.02%	-9.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.44%	11.02%	-9.58%

MUIIX vs. CDX - Expense Ratio Comparison

MUIIX has a 0.35% expense ratio, which is higher than CDX's 0.25% expense ratio.

Dividends

MUIIX vs. CDX - Dividend Comparison

MUIIX's dividend yield for the trailing twelve months is around 3.98%, less than CDX's 8.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020
CDX Simplify High Yield ETF	8.30%	7.18%	12.60%	5.26%	7.51%	0.00%	0.00%
MUIIX Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio	3.98%	4.36%	4.81%	3.88%	1.20%	0.10%	0.39%

Frequently Asked Questions

Can I hold both MUIIX and CDX in my portfolio?

MUIIX and CDX have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MUIIX or CDX?

CDX has higher volatility (1.74%) compared to MUIIX (0.39%). In terms of maximum drawdown, MUIIX dropped -1.20% vs CDX's -13.24%.

Which has better risk-adjusted returns?

MUIIX currently has the higher Sharpe Ratio (3.37 vs -0.32), 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.