FMUB — Fidelity Municipal Bond Opportunities ETF
Data updated: 2026-06-26
FMUB — Fidelity Municipal Bond Opportunities ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $190.36M AUM · 0.30% expense ratio · 7.2% 1-yr return. From SEC regulatory filings.
FMUB Fund Overview
FMUB — Fidelity Municipal Bond Opportunities ETF is a US ETF managed by Fidelity Merrimack Street Trust, categorised as Long Municipal - National Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Fidelity Merrimack Street Trust
- Category: Long Municipal - National Bond
- Assets under management: $190.36M
- 1-year return: 7.2%
- Ticker: FMUB
- SEC CIK: 0001562565
- SEC series ID: S000089370
- Share class ID: C000255892
FMUB Holdings
Top 10 holdings of Fidelity Municipal Bond Opportunities ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Fidelity Revere Street Trust | 11.76% |
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 1.11% |
| Dallas Fort Worth Tx Intl Arpt | 1.06% |
| SAN ANTONIO TX ELEC and GAS REV | 1.04% |
| Southeast Energy Authority A Cooperative District | 0.99% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.85% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.85% |
| University Ka Ha Hlth Fac Rev | 0.84% |
| Illinois Fin Auth Rv | 0.83% |
| Southeast Energy Authority A Cooperative District | 0.80% |
FMUB Portfolio Allocation
Asset-class allocation of Fidelity Municipal Bond Opportunities ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 91.9% |
| Cash & Equivalents | 11.8% |
FMUB Performance
Total returns for FMUB (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 7.2% |
FMUB Risk Information
Risk metrics for FMUB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.5%
FMUB Costs and Fees
FMUB costs about $30 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.30%
- Gross expense ratio: 0.30%
- Portfolio turnover: 39%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FMUB Cashflows
Over the 12 months to 2026-04, Fidelity Municipal Bond Opportunities ETF had net inflows of $131.42M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | $18.35M |
| 2026-03 | $18.33M |
| 2026-02 | $0 |
| 2026-01 | $5.10M |
| 2025-12 | $9.18M |
| 2025-11 | $6.13M |
FMUB Debt Constituents
Largest debt holdings of Fidelity Municipal Bond Opportunities ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 1.11% |
| Dallas Fort Worth Tx Intl Arpt | 1.06% |
| SAN ANTONIO TX ELEC and GAS REV | 1.04% |
| Southeast Energy Authority A Cooperative District | 0.99% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.85% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.85% |
| University Ka Ha Hlth Fac Rev | 0.84% |
| Illinois Fin Auth Rv | 0.83% |
| Southeast Energy Authority A Cooperative District | 0.80% |
| Fulton Cnty Ga Dev Auth Rev | 0.79% |
FMUB Prospectus and SEC Filings
Official Fidelity Municipal Bond Opportunities ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Municipal - National 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.