ACSG vs. MUSI

Last updated Jun 26, 2026

ACSG (American Century Small Cap Growth Insights ETF) and MUSI (American Century Multisector Income ETF) are both exchange-traded funds - ACSG is a Small Cap Growth Equities fund actively managed by American Century, while MUSI is a Multisector Bonds fund actively managed by American Century. Both are actively managed. A 0.53 correlation means they provide meaningful diversification when combined. ACSG charges 0.49%/yr vs 0.36%/yr for MUSI.

Performance

ACSG vs. MUSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Small Cap Growth Insights ETF (ACSG) 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, ACSG achieves a 20.88% return, which is significantly higher than MUSI's 1.30% return.

ACSG

• 1D: 0.91%
• 1M: 4.36%
• YTD: 20.88%
• 6M: 17.41%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MUSI

• 1D: 0.09%
• 1M: 0.79%
• YTD: 1.30%
• 6M: 1.21%
• 1Y: 5.38%
• 3Y*: 6.62%
• 5Y*: —
• 10Y*: —

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

ACSG vs. MUSI - Yearly Performance Comparison

	2026 (YTD)	2025
ACSG American Century Small Cap Growth Insights ETF	20.88%	-0.86%
MUSI American Century Multisector Income ETF	1.30%	0.92%

Correlation

The correlation between ACSG and MUSI is 0.53, 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 Oct 16, 2025	0.53

Return for Risk

ACSG vs. MUSI — Risk / Return Rank

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

ACSG

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

MUSI

MUSI Risk / Return Rank: 50
MUSI Sharpe Ratio Rank: 53
MUSI Sortino Ratio Rank: 57
MUSI Omega Ratio Rank: 53
MUSI Calmar Ratio Rank: 44
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.

ACSG vs. MUSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Small Cap Growth Insights ETF (ACSG) 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.

	ACSG	MUSI	Difference
Sharpe ratio: Return per unit of total volatility	—	1.61	—
Sortino ratio: Return per unit of downside risk	—	2.40	—
Omega ratio: Gain probability vs. loss probability	—	1.30	—
Calmar ratio: Return relative to maximum drawdown	—	1.94	—
Martin ratio: Return relative to average drawdown	—	6.68	—

Drawdowns

ACSG vs. MUSI - Drawdown Comparison

The maximum ACSG drawdown since its inception was -13.28%, roughly equal to the maximum MUSI drawdown of -13.91%. Use the drawdown chart below to compare losses from any high point for ACSG and MUSI.

Drawdown Indicators

	ACSG	MUSI	Difference
Max Drawdown Largest peak-to-trough decline	-13.28%	-13.91%	+0.63%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.78%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-4.16%	—
Current Drawdown Current decline from peak	-0.33%	-0.45%	+0.12%
Average Drawdown Average peak-to-trough decline	-2.90%	-4.18%	+1.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.81%	—

Volatility

Volatility by Period

	ACSG	MUSI	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	1.08%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.73%	—
Volatility (1Y) Calculated over the trailing 1-year period	22.85%	3.37%	+19.48%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.85%	4.84%	+18.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.85%	4.84%	+18.01%

ACSG vs. MUSI - Expense Ratio Comparison

ACSG has a 0.49% expense ratio, which is higher than MUSI's 0.36% expense ratio.

Dividends

ACSG vs. MUSI - Dividend Comparison

ACSG has not paid dividends to shareholders, while MUSI's dividend yield for the trailing twelve months is around 5.50%.

Position	TTM	2025	2024	2023	2022	2021
ACSG American Century Small Cap Growth Insights ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
MUSI American Century Multisector Income ETF	5.50%	5.74%	6.00%	5.20%	4.02%	1.62%

Frequently Asked Questions

Can I hold both ACSG and MUSI in my portfolio?

ACSG and MUSI have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, ACSG 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, ACSG or MUSI?

MUSI is cheaper with a 0.36% expense ratio, compared with 0.49% for ACSG.

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

MUSI has the higher dividend yield at 5.50%, compared with 0.00% for ACSG.

What is the main difference between ACSG and MUSI?

ACSG is categorized as Small Cap Growth Equities, while MUSI is Multisector Bonds. Their fees differ too: 0.49% for ACSG and 0.36% for MUSI.