AHMFX — American High-Income Municipal Bond Fund
Data updated: 2026-06-26
AHMFX — American High-Income Municipal Bond Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $14.73B AUM · 0.43% expense ratio · 7.2% 1-yr return. From SEC regulatory filings.
AHMFX Fund Overview
AHMFX — American High-Income Municipal Bond Fund is a US mutual fund managed by American High-Income Municipal Bond Fund, 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 mutual fund
- Manager: American High-Income Municipal Bond Fund
- Category: Long Municipal - National Bond
- Assets under management: $14.73B
- 1-year return: 7.2%
- Ticker: AHMFX
- SEC CIK: 0000925950
- SEC series ID: S000009229
- Share class ID: C000068565
AHMFX Holdings
Top 10 holdings of American High-Income Municipal Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Puerto Rico Commonwealth Of (government) | 0.98% |
| Puerto Rico Commonwealth Of (government) | 0.93% |
| New York N Y | 0.37% |
| Buckeye Tobacco Settlement Financing Authority | 0.32% |
| New York City Transitional Finance Auth Future Tax Sec Rev | 0.32% |
| Florida Development Finance Corp. | 0.32% |
| Uipa Crossroads Public Infrastructure District | 0.31% |
| City Of Houston Tx Airport System Revenue | 0.31% |
| Public Finance Authority Wisconsin | 0.31% |
| Puerto Rico Sales Tax Financing Corp. | 0.29% |
AHMFX Portfolio Allocation
Asset-class allocation of American High-Income Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.2% |
| Loans | 0.1% |
| Securitized | 0.1% |
AHMFX Performance
Total returns for AHMFX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.4% |
| 1 year | 7.2% |
| 3 years (annualised) | 5.8% |
| 5 years (annualised) | 2.1% |
AHMFX Risk Information
Risk metrics for AHMFX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 4.4%
AHMFX Costs and Fees
AHMFX costs about $43 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.43%
- Gross expense ratio: 0.43%
- Portfolio turnover: 28%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
AHMFX Cashflows
Over the 12 months to 2026-04, American High-Income Municipal Bond Fund had net inflows of $567.53M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | $435.42M |
| 2026-03 | $173.53M |
| 2026-02 | $281.45M |
| 2026-01 | $215.46M |
| 2025-12 | $424.23M |
| 2025-11 | $193.68M |
AHMFX Debt Constituents
Largest debt holdings of American High-Income Municipal Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Puerto Rico Commonwealth Of (government) | 0.98% |
| Puerto Rico Commonwealth Of (government) | 0.93% |
| New York N Y | 0.37% |
| Buckeye Tobacco Settlement Financing Authority | 0.32% |
| New York City Transitional Finance Auth Future Tax Sec Rev | 0.32% |
| Florida Development Finance Corp. | 0.32% |
| Uipa Crossroads Public Infrastructure District | 0.31% |
| City Of Houston Tx Airport System Revenue | 0.31% |
| Public Finance Authority Wisconsin | 0.31% |
| Puerto Rico Sales Tax Financing Corp. | 0.29% |
AHMFX Prospectus and SEC Filings
Official American High-Income Municipal Bond Fund 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.