WMSB vs. MUSI

Last updated Jul 10, 2026

WMSB (Weitz Multisector Bond ETF) and MUSI (American Century Multisector Income ETF) are both Multisector Bonds funds. Both are actively managed. A 0.70 correlation means they provide meaningful diversification when combined. WMSB charges 0.65%/yr vs 0.36%/yr for MUSI.

Performance

WMSB vs. MUSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Weitz Multisector Bond ETF (WMSB) and American Century Multisector Income ETF (MUSI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WMSB achieves a 1.87% return, which is significantly higher than MUSI's 0.86% return.

WMSB

• 1D: 0.08%
• 1M: 0.65%
• 6M: 1.63%
• YTD: 1.87%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MUSI

• 1D: 0.12%
• 1M: 0.36%
• 6M: 0.84%
• YTD: 0.86%
• 1Y: 4.75%
• 3Y*: 6.68%
• 5Y*: 2.16%
• 10Y*: —

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

WMSB vs. MUSI - Yearly Performance Comparison

	2026 (YTD)	2025
WMSB Weitz Multisector Bond ETF	1.87%	1.47%
MUSI American Century Multisector Income ETF	0.86%	0.95%

Correlation

The correlation between WMSB and MUSI is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 5, 2025	0.70

Return for Risk

WMSB vs. MUSI — Risk / Return Rank

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

WMSB

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

MUSI

MUSI Risk / Return Rank: 48
MUSI Sharpe Ratio Rank: 52
MUSI Sortino Ratio Rank: 54
MUSI Omega Ratio Rank: 50
MUSI Calmar Ratio Rank: 42
MUSI Martin Ratio Rank: 45

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.

WMSB vs. MUSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Weitz Multisector Bond ETF (WMSB) and American Century Multisector Income ETF (MUSI). 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.

	WMSB	MUSI	Difference
Sharpe ratio: Return per unit of total volatility	—	1.42	—
Sortino ratio: Return per unit of downside risk	—	2.10	—
Omega ratio: Gain probability vs. loss probability	—	1.26	—
Calmar ratio: Return relative to maximum drawdown	—	1.72	—
Martin ratio: Return relative to average drawdown	—	5.85	—

Drawdowns

WMSB vs. MUSI - Drawdown Comparison

The maximum WMSB drawdown since its inception was -1.89%, smaller than the maximum MUSI drawdown of -13.91%. Use the drawdown chart below to compare losses from any high point for WMSB and MUSI.

Drawdown Indicators

	WMSB	MUSI	Difference
Max Drawdown Largest peak-to-trough decline	-1.89%	-13.91%	+12.02%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.78%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-4.16%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-13.91%	—
Current Drawdown Current decline from peak	-0.31%	-0.88%	+0.57%
Average Drawdown Average peak-to-trough decline	-0.30%	-4.15%	+3.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.81%	—

Volatility

Volatility by Period

	WMSB	MUSI	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	1.08%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.76%	—
Volatility (1Y) Calculated over the trailing 1-year period	2.79%	3.38%	-0.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.79%	4.84%	-2.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.79%	4.83%	-2.04%

WMSB vs. MUSI - Expense Ratio Comparison

WMSB has a 0.65% expense ratio, which is higher than MUSI's 0.36% expense ratio.

Dividends

WMSB vs. MUSI - Dividend Comparison

WMSB's dividend yield for the trailing twelve months is around 3.31%, less than MUSI's 5.44% yield.

Position	TTM	2025	2024	2023	2022	2021
MUSI American Century Multisector Income ETF	5.44%	5.74%	6.00%	5.20%	4.02%	1.62%
WMSB Weitz Multisector Bond ETF	3.31%	0.64%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both WMSB and MUSI in my portfolio?

WMSB and MUSI have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, WMSB or MUSI?

On fees, MUSI is cheaper at 0.36% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, WMSB or MUSI?

MUSI is cheaper with a 0.36% expense ratio, compared with 0.65% for WMSB.

Which ETF pays a higher dividend yield, WMSB or MUSI?

MUSI has the higher dividend yield at 5.44%, compared with 3.31% for WMSB.

What is the main difference between WMSB and MUSI?

They also come from different issuers: Weitz and American Century. Their fees differ too: 0.65% for WMSB and 0.36% for MUSI.