MUSI — American Century Multisector Income ETF
Data updated: 2026-07-29
MUSI — American Century Multisector Income ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Intermediate Corporate Bond · $220.96M AUM · 0.38% expense ratio · 6.1% 1-yr return. From SEC regulatory filings.
MUSI Fund Overview
MUSI — American Century Multisector Income ETF is a US ETF managed by American Century ETF Trust, categorised as Intermediate Corporate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: American Century ETF Trust
- Category: Intermediate Corporate Bond
- Assets under management: $220.96M
- 1-year return: 6.1%
- Ticker: MUSI
- SEC CIK: 0001710607
- SEC series ID: S000072410
- Share class ID: C000228610
MUSI Holdings
Top 10 holdings of American Century Multisector Income ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| U.s. Treasury | 3.20% |
| U.s. Treasury | 3.06% |
| Freddie Mac Pool | 2.83% |
| U.s. Treasury | 2.26% |
| State Street Institutional US Government Money Market Fund | 1.73% |
| United Kingdom Gilt | 1.28% |
| New Zealand Government Bond | 1.21% |
| U.s. Treasury | 1.10% |
| U.s. Treasury | 0.90% |
| Bank of Montreal | 0.79% |
MUSI Portfolio Allocation
Asset-class allocation of American Century Multisector Income ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 61.6% |
| Securitized | 27.5% |
| Equity | 8.5% |
| Cash & Equivalents | 2.4% |
| Loans | 0.4% |
MUSI Performance
Total returns for MUSI (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.9% |
| 1 year | 6.1% |
| 3 years (annualised) | 6.4% |
| 5 years (annualised) | 2.2% |
MUSI Risk Information
Risk metrics for MUSI, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.2%
MUSI Costs and Fees
MUSI costs about $38 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.38%
- Gross expense ratio: 0.38%
- Portfolio turnover: 163%
- Brokerage commissions: 0.88 bps of average net assets (SEC N-CEN)
MUSI Cashflows
Over the 12 months to 2026-02, American Century Multisector Income ETF had net inflows of $7.02M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $4.44M |
| 2026-01 | $4.43M |
| 2025-12 | $15.45M |
| 2025-11 | −$6.61M |
| 2025-10 | $8.88M |
| 2025-09 | −$2.22M |
MUSI Debt Constituents
Largest debt holdings of American Century Multisector Income ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| U.s. Treasury | 3.20% |
| U.s. Treasury | 3.06% |
| U.s. Treasury | 2.26% |
| United Kingdom Gilt | 1.28% |
| New Zealand Government Bond | 1.21% |
| U.s. Treasury | 1.10% |
| U.s. Treasury | 0.90% |
| Bank of Montreal | 0.79% |
| Ladder Capital Finance Holdings LLLP / Ladder Capital Finance Corp | 0.71% |
| Riverspring Hlth Senior | 0.65% |
MUSI Prospectus and SEC Filings
Official American Century Multisector Income ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Intermediate Corporate Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.