MWUSX vs. SEMRX

Last updated Jun 4, 2026

MWUSX (Metropolitan West Ultra Short Bond Fund) and SEMRX (Semper Short Duration Fund) are both Ultrashort Bond funds. Over the past 10 years, MWUSX returned 1.93%/yr vs 3.40%/yr for SEMRX. At a 0.28 correlation, their price movements are largely independent. MWUSX charges 0.50%/yr vs 0.85%/yr for SEMRX.

Performance

MWUSX vs. SEMRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Metropolitan West Ultra Short Bond Fund (MWUSX) and Semper Short Duration Fund (SEMRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MWUSX achieves a 1.16% return, which is significantly lower than SEMRX's 2.15% return. Over the past 10 years, MWUSX has underperformed SEMRX with an annualized return of 1.93%, while SEMRX has yielded a comparatively higher 3.40% annualized return.

MWUSX

• 1D: 0.00%
• 1M: 0.31%
• YTD: 1.16%
• 6M: 1.63%
• 1Y: 4.43%
• 3Y*: 4.45%
• 5Y*: 2.33%
• 10Y*: 1.93%

SEMRX

• 1D: 0.00%
• 1M: 0.56%
• YTD: 2.15%
• 6M: 2.54%
• 1Y: 5.95%
• 3Y*: 7.31%
• 5Y*: 4.82%
• 10Y*: 3.40%

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

MWUSX vs. SEMRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MWUSX Metropolitan West Ultra Short Bond Fund	1.16%	5.15%	4.44%	4.09%	-2.78%	-0.30%	1.18%	2.95%	2.36%	0.83%
SEMRX Semper Short Duration Fund	2.15%	6.47%	8.21%	8.76%	-1.69%	1.93%	-1.19%	3.48%	2.11%	2.74%

Correlation

The correlation between MWUSX and SEMRX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.38
Correlation (5Y) Calculated over the trailing 5-year period	0.32
Correlation (10Y) Calculated over the trailing 10-year period	0.34
Correlation (All Time) Calculated using the full available price history since Jan 4, 2011	0.28

The correlation between MWUSX and SEMRX shifts across timeframes, from 0.28 (all time) to 0.38 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

MWUSX vs. SEMRX — Risk / Return Rank

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

MWUSX

MWUSX Risk / Return Rank: 86
MWUSX Sharpe Ratio Rank: 57
MWUSX Sortino Ratio Rank: 85
MWUSX Omega Ratio Rank: 97
MWUSX Calmar Ratio Rank: 96
MWUSX Martin Ratio Rank: 97

SEMRX

SEMRX Risk / Return Rank: 98
SEMRX Sharpe Ratio Rank: 93
SEMRX Sortino Ratio Rank: 99
SEMRX Omega Ratio Rank: 99
SEMRX Calmar Ratio Rank: 99
SEMRX Martin Ratio Rank: 99

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.

MWUSX vs. SEMRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Metropolitan West Ultra Short Bond Fund (MWUSX) and Semper Short Duration Fund (SEMRX). 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.

	MWUSX	SEMRX	Difference
Sharpe ratio: Return per unit of total volatility	2.21	3.19	-0.98
Sortino ratio: Return per unit of downside risk	4.08	10.68	-6.60
Omega ratio: Gain probability vs. loss probability	1.91	3.05	-1.14
Calmar ratio: Return relative to maximum drawdown	6.21	11.44	-5.22
Martin ratio: Return relative to average drawdown	29.29	47.40	-18.11
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MWUSX vs. SEMRX - Sharpe Ratio Comparison

The current MWUSX Sharpe Ratio is 2.21, which is lower than the SEMRX Sharpe Ratio of 3.19. The chart below compares the historical Sharpe Ratios of MWUSX and SEMRX, 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

	MWUSX	SEMRX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.21	3.19	-0.98
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.95	2.64	-1.69
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.02	1.48	-0.46
Sharpe Ratio (All Time) Calculated using the full available price history	0.82	1.27	-0.45

Drawdowns

MWUSX vs. SEMRX - Drawdown Comparison

The maximum MWUSX drawdown since its inception was -25.25%, which is greater than SEMRX's maximum drawdown of -13.09%. Use the drawdown chart below to compare losses from any high point for MWUSX and SEMRX.

Drawdown Indicators

	MWUSX	SEMRX	Difference
Max Drawdown Largest peak-to-trough decline	-25.25%	-13.09%	-12.16%
Max Drawdown (1Y) Largest decline over 1 year	-0.72%	-0.52%	-0.20%
Max Drawdown (3Y) Largest decline over 3 years	-1.10%	-0.63%	-0.47%
Max Drawdown (5Y) Largest decline over 5 years	-5.06%	-4.05%	-1.01%
Max Drawdown (10Y) Largest decline over 10 years	-5.06%	-13.09%	+8.03%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-1.76%	-0.63%	-1.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.15%	0.13%	+0.02%

Volatility

MWUSX vs. SEMRX - Volatility Comparison

Metropolitan West Ultra Short Bond Fund (MWUSX) and Semper Short Duration Fund (SEMRX) have volatilities of 0.47% and 0.48%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MWUSX	SEMRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.47%	0.48%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	1.43%	1.27%	+0.16%
Volatility (1Y) Calculated over the trailing 1-year period	2.01%	1.87%	+0.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.47%	1.83%	+0.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.91%	2.31%	-0.40%

MWUSX vs. SEMRX - Expense Ratio Comparison

MWUSX has a 0.50% expense ratio, which is lower than SEMRX's 0.85% expense ratio.

Dividends

MWUSX vs. SEMRX - Dividend Comparison

MWUSX's dividend yield for the trailing twelve months is around 3.85%, less than SEMRX's 5.67% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MWUSX Metropolitan West Ultra Short Bond Fund	3.85%	3.80%	3.59%	3.25%	1.28%	0.41%	0.93%	2.67%	2.56%	1.06%	1.18%	0.65%
SEMRX Semper Short Duration Fund	5.67%	5.94%	6.13%	6.05%	3.22%	1.71%	1.95%	2.90%	2.70%	2.20%	3.03%	2.35%

Frequently Asked Questions

Can I hold both MWUSX and SEMRX in my portfolio?

MWUSX and SEMRX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MWUSX or SEMRX?

SEMRX has higher volatility (0.48%) compared to MWUSX (0.47%). In terms of maximum drawdown, MWUSX dropped -25.25% vs SEMRX's -13.09%.

Which has better risk-adjusted returns?

SEMRX currently has the higher Sharpe Ratio (3.19 vs 2.21), 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.