FMUN — Fidelity Systematic Municipal Bond Index ETF
Data updated: 2026-05-26
FMUN — Fidelity Systematic Municipal Bond Index ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $178.38M AUM · 0.05% expense ratio. From SEC regulatory 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: $178.38M
- 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 | 2.28% |
| Kentucky, Inc. Ky Pub Energy Auth Gas Supply Rev | 0.91% |
| SALT RIVER PROJ AZ AGRIC and PWR | 0.85% |
| University Ca Revs | 0.62% |
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 0.57% |
| Pennsylvania St Tpk Commn Tpk | 0.52% |
| California St | 0.52% |
| Southeast Energy Authority A Cooperative District | 0.49% |
| Ny Payroll Mobility Tx | 0.47% |
| Illinois St | 0.47% |
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 | 98.9% |
| Cash & Equivalents | 0.1% |
FMUN Performance
Total returns for FMUN (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.4% |
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 2026-03, Fidelity Systematic Municipal Bond Index ETF had net inflows of $183.76M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $2.54M |
| 2026-02 | $1.02M |
| 2026-01 | $5.56M |
| 2025-12 | $2.01M |
| 2025-11 | $0 |
| 2025-10 | $0 |
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 | 2.28% |
| Kentucky, Inc. Ky Pub Energy Auth Gas Supply Rev | 0.91% |
| SALT RIVER PROJ AZ AGRIC and PWR | 0.85% |
| University Ca Revs | 0.62% |
| Main Str Nat Gas, Inc. Ga Gas Supply Rev | 0.57% |
| Pennsylvania St Tpk Commn Tpk | 0.52% |
| California St | 0.52% |
| Southeast Energy Authority A Cooperative District | 0.49% |
| Ny Payroll Mobility Tx | 0.47% |
| Illinois St | 0.47% |
FMUN Prospectus and SEC Filings
Official Fidelity Systematic Municipal Bond Index 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.