NUSIX vs. MUIIX

Last updated Jun 4, 2026

NUSIX (Navigator Ultra Short Term Bond Fund) and MUIIX (Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio) are both Ultrashort Bond funds. Over the past 5 years, NUSIX returned 3.68%/yr vs 3.25%/yr for MUIIX. At a correlation of -0.03, they often move in opposite directions. NUSIX charges 0.71%/yr vs 0.35%/yr for MUIIX.

Performance

NUSIX vs. MUIIX - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with NUSIX having a 1.56% return and MUIIX slightly higher at 1.57%.

NUSIX

• 1D: 0.00%
• 1M: 0.40%
• YTD: 1.56%
• 6M: 1.88%
• 1Y: 4.27%
• 3Y*: 5.04%
• 5Y*: 3.68%
• 10Y*: —

MUIIX

• 1D: 0.00%
• 1M: 0.32%
• YTD: 1.57%
• 6M: 1.91%
• 1Y: 4.22%
• 3Y*: 4.41%
• 5Y*: 3.25%
• 10Y*: —

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

NUSIX vs. MUIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
NUSIX Navigator Ultra Short Term Bond Fund	1.56%	4.63%	5.54%	5.64%	1.14%	0.36%	3.26%
MUIIX Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio	1.57%	4.47%	4.94%	4.17%	1.10%	0.10%	0.49%

Correlation

The correlation between NUSIX and MUIIX 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 (5Y) Calculated over the trailing 5-year period	-0.05
Correlation (All Time) Calculated using the full available price history since Apr 8, 2020	-0.03

The correlation between NUSIX and MUIIX shifts across timeframes, from -0.05 (5 years) to 0.15 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

NUSIX vs. MUIIX — Risk / Return Rank

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

NUSIX

NUSIX Risk / Return Rank: 100
NUSIX Sharpe Ratio Rank: 100
NUSIX Sortino Ratio Rank: 100
NUSIX Omega Ratio Rank: 100
NUSIX Calmar Ratio Rank: 100
NUSIX Martin Ratio Rank: 100

MUIIX

MUIIX Risk / Return Rank: 99
MUIIX Sharpe Ratio Rank: 97
MUIIX Sortino Ratio Rank: 100
MUIIX Omega Ratio Rank: 100
MUIIX Calmar Ratio Rank: 100
MUIIX Martin Ratio Rank: 100

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.

NUSIX vs. MUIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Navigator Ultra Short Term Bond Fund (NUSIX) and Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio (MUIIX). 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.

	NUSIX	MUIIX	Difference
Sharpe ratio Return per unit of total volatility	6.91	3.61	+3.30
Sortino ratio Return per unit of downside risk	29.02	23.95	+5.06
Omega ratio Gain probability vs. loss probability	18.90	14.80	+4.10
Calmar ratio Return relative to maximum drawdown	43.25	42.37	+0.88
Martin ratio Return relative to average drawdown	337.91	126.87	+211.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NUSIX vs. MUIIX - Sharpe Ratio Comparison

The current NUSIX Sharpe Ratio is 6.91, which is higher than the MUIIX Sharpe Ratio of 3.61. The chart below compares the historical Sharpe Ratios of NUSIX and MUIIX, 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

	NUSIX	MUIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	6.91	3.61	+3.30
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	4.83	2.05	+2.78
Sharpe Ratio (All Time) Calculated using the full available price history	3.74	1.90	+1.84

Drawdowns

NUSIX vs. MUIIX - Drawdown Comparison

The maximum NUSIX drawdown since its inception was -2.69%, which is greater than MUIIX's maximum drawdown of -1.20%. Use the drawdown chart below to compare losses from any high point for NUSIX and MUIIX.

Drawdown Indicators

	NUSIX	MUIIX	Difference
Max Drawdown Largest peak-to-trough decline	-2.69%	-1.20%	-1.49%
Max Drawdown (1Y) Largest decline over 1 year	-0.10%	-0.10%	0.00%
Max Drawdown (3Y) Largest decline over 3 years	-0.10%	-1.20%	+1.10%
Max Drawdown (5Y) Largest decline over 5 years	-0.80%	-1.20%	+0.40%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.08%	-0.06%	-0.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.01%	0.03%	-0.02%

Volatility

NUSIX vs. MUIIX - Volatility Comparison

The current volatility for Navigator Ultra Short Term Bond Fund (NUSIX) is 0.18%, while Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio (MUIIX) has a volatility of 0.35%. This indicates that NUSIX experiences smaller price fluctuations and is considered to be less risky than MUIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NUSIX	MUIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.18%	0.35%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	0.43%	0.78%	-0.35%
Volatility (1Y) Calculated over the trailing 1-year period	0.63%	1.17%	-0.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.77%	1.59%	-0.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.83%	1.44%	-0.61%

NUSIX vs. MUIIX - Expense Ratio Comparison

NUSIX has a 0.71% expense ratio, which is higher than MUIIX's 0.35% expense ratio.

Dividends

NUSIX vs. MUIIX - Dividend Comparison

NUSIX's dividend yield for the trailing twelve months is around 4.16%, more than MUIIX's 4.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
MUIIX Morgan Stanley Institutional Fund Trust Ultra-Short Income Portfolio	4.03%	4.36%	4.81%	3.88%	1.20%	0.10%	0.39%	0.00%
NUSIX Navigator Ultra Short Term Bond Fund	4.16%	4.25%	5.23%	4.92%	1.74%	0.66%	1.08%	1.99%

Frequently Asked Questions

Can I hold both NUSIX and MUIIX in my portfolio?

NUSIX and MUIIX 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, NUSIX or MUIIX?

MUIIX has higher volatility (0.35%) compared to NUSIX (0.18%). In terms of maximum drawdown, NUSIX dropped -2.69% vs MUIIX's -1.20%.

Which has better risk-adjusted returns?

NUSIX currently has the higher Sharpe Ratio (6.91 vs 3.61), 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.