FMUN — Fidelity Systematic Municipal Bond Index ETF
Data updated: 2026-09-11
FMUN — Fidelity Systematic Municipal Bond Index ETF. Long Municipal - National Bond · $183.09M AUM. Holdings, fees, performance and SEC filings.
FMUN Fund Overview
FMUN — Fidelity Systematic Municipal Bond Index 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: $183.09M
- 1-year return: 6.8%
- Ticker: FMUN
- SEC CIK: 0001562565
- SEC series ID: S000089371
- Share class ID: C000255893
FMUN Holdings
Top 10 holdings of Fidelity Systematic Municipal Bond Index ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| California Cmnty Choice Fing Auth Clean Energy Proj Rev | 2.23% |
| Kentucky, Inc. Ky Pub Energy Auth Gas Supply Rev | 0.89% |
| SALT RIVER PROJ AZ AGRIC and PWR | 0.83% |
| University Ca Revs | 0.61% |
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 0.56% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.53% |
| Fidelity Revere Street Trust | 0.52% |
| Pennsylvania St Tpk Commn Tpk | 0.51% |
| California St | 0.51% |
| Southeast Energy Authority A Cooperative District | 0.48% |
FMUN Portfolio Allocation
Asset-class allocation of Fidelity Systematic Municipal Bond Index ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.5% |
| Cash & Equivalents | 0.5% |
FMUN Performance
Total returns for FMUN (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 2.0% |
| 1 year | 6.8% |
FMUN Risk Information
Risk metrics for FMUN, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.1%
FMUN Costs and Fees
FMUN costs about $5 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.05%
- Gross expense ratio: 0.05%
- Portfolio turnover: 69%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
FMUN Cashflows
Over the 12 months to 2026-06, Fidelity Systematic Municipal Bond Index ETF had net inflows of $13.13M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $1.51M |
| 2026-05 | $1.99M |
| 2026-04 | −$1.51M |
| 2026-03 | $2.54M |
| 2026-02 | $1.02M |
| 2026-01 | $5.56M |
FMUN Debt Constituents
Largest debt holdings of Fidelity Systematic Municipal Bond Index ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| California Cmnty Choice Fing Auth Clean Energy Proj Rev | 2.23% |
| Kentucky, Inc. Ky Pub Energy Auth Gas Supply Rev | 0.89% |
| SALT RIVER PROJ AZ AGRIC and PWR | 0.83% |
| University Ca Revs | 0.61% |
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 0.56% |
| Black Belt Energy Gas Dist Alagas Proj Rev | 0.53% |
| Pennsylvania St Tpk Commn Tpk | 0.51% |
| California St | 0.51% |
| Southeast Energy Authority A Cooperative District | 0.48% |
| Ny Payroll Mobility Tx | 0.48% |
FMUN Prospectus and SEC Filings
Official Fidelity Systematic Municipal Bond Index ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-10-27
- Prospectus (485BPOS) — filed 2024-12-26
- Prospectus supplement (497) — filed 2025-04-07
- Portfolio holdings (N-PORT) — filed 2026-08-24
- Portfolio holdings (N-PORT) — filed 2026-05-26
- Portfolio holdings (N-PORT) — filed 2026-02-24
- Annual census (N-CEN) — filed 2026-09-11
- Annual census (N-CEN) — filed 2025-09-11
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.