MFLX — First Trust Flexible Municipal High Income ETF
Data updated: 2026-07-22
MFLX — First Trust Flexible Municipal High Income ETF. Long Municipal - National Bond · $18.90M AUM. Holdings, fees, performance and SEC filings.
MFLX Fund Overview
MFLX — First Trust Flexible Municipal High Income ETF is a US ETF managed by First Trust Exchange-Traded Fund VIII, 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: First Trust Exchange-Traded Fund VIII
- Category: Long Municipal - National Bond
- Assets under management: $18.90M
- 1-year return: 8.9%
- Ticker: MFLX
- SEC CIK: 0001667919
- SEC series ID: S000053970
- Share class ID: C000169822
MFLX Holdings
Top 10 holdings of First Trust Flexible Municipal High Income ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Columbus Regional Airport Authority (oh) | 2.80% |
| Jefferson (al), County Of | 2.58% |
| Charleston Cnty S C Arpt Dist | 1.73% |
| Dutchess Cnty N Y Loc Dev Corp. | 1.70% |
| Maine Finance Authority (me) | 1.67% |
| Indianapolis Local Public Improvement Bond Bank (in) | 1.65% |
| Texas Water Development Board (tx) | 1.65% |
| Hamilton (oh), County Of | 1.64% |
| Massachusetts Development Finance Agency (ma) | 1.63% |
| Erie Pa Swr Auth | 1.63% |
MFLX Portfolio Allocation
Asset-class allocation of First Trust Flexible Municipal High Income ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 94.3% |
| Equity | 5.5% |
MFLX Performance
Total returns for MFLX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 2.5% |
| 1 year | 8.9% |
| 3 years (annualised) | 5.5% |
| 5 years (annualised) | -0.1% |
MFLX Risk Information
Risk metrics for MFLX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.9%
MFLX Costs and Fees
MFLX costs about $101 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.01%
- Gross expense ratio: 1.01%
- Portfolio turnover: 33%
- Brokerage commissions: 0.13 bps of average net assets (SEC N-CEN)
MFLX Cashflows
Over the 12 months to 2026-05, First Trust Flexible Municipal High Income ETF had net inflows of $4.14M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-05 | $0 |
| 2026-04 | $0 |
| 2026-03 | $841.99K |
| 2026-02 | $0 |
| 2026-01 | $0 |
| 2025-12 | $0 |
MFLX Debt Constituents
Largest debt holdings of First Trust Flexible Municipal High Income ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Columbus Regional Airport Authority (oh) | 2.80% |
| Jefferson (al), County Of | 2.58% |
| Charleston Cnty S C Arpt Dist | 1.73% |
| Dutchess Cnty N Y Loc Dev Corp. | 1.70% |
| Maine Finance Authority (me) | 1.67% |
| Indianapolis Local Public Improvement Bond Bank (in) | 1.65% |
| Texas Water Development Board (tx) | 1.65% |
| Hamilton (oh), County Of | 1.64% |
| Massachusetts Development Finance Agency (ma) | 1.63% |
| Erie Pa Swr Auth | 1.63% |
MFLX Prospectus and SEC Filings
Official First Trust Flexible Municipal High Income ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-12-29
- Prospectus (485BPOS) — filed 2024-12-30
- Prospectus (485BPOS) — filed 2023-12-29
- Portfolio holdings (N-PORT) — filed 2026-07-22
- Portfolio holdings (N-PORT) — filed 2026-04-23
- Portfolio holdings (N-PORT) — filed 2026-01-26
- Annual census (N-CEN) — filed 2025-11-12
- Annual census, amended (N-CEN/A) — filed 2025-07-24
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.