RMAFX — American Funds Mortgage Fund
Data updated: 2026-07-29
RMAFX — American Funds Mortgage Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Securitized (MBS/ABS/CMBS) Bond · $13.08B AUM · 0.32% expense ratio · 7.4% 1-yr return. From SEC regulatory filings.
RMAFX Fund Overview
RMAFX — American Funds Mortgage Fund is a US mutual fund managed by American Funds Mortgage Fund, categorised as Long Securitized (MBS/ABS/CMBS) 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 Funds Mortgage Fund
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $13.08B
- 1-year return: 7.4%
- Ticker: RMAFX
- SEC CIK: 0001496998
- SEC series ID: S000030190
- Share class ID: C000092902
RMAFX Holdings
Top 10 holdings of American Funds Mortgage Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Capital Group Central Cash Fund | 6.53% |
| Uniform Mbs | 3.33% |
| Federal Home Loan Banks | 1.90% |
| Federal Home Loan Banks | 1.87% |
| Federal Home Loan Banks | 1.71% |
| United States Treasury | 1.62% |
| Federal Home Loan Mortgage Corp. | 1.61% |
| Federal Home Loan Banks | 1.52% |
| Federal Home Loan Banks | 1.51% |
| Federal Home Loan Banks | 1.51% |
RMAFX Portfolio Allocation
Asset-class allocation of American Funds Mortgage Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 70.7% |
| Fixed Income | 35.8% |
| Cash & Equivalents | 6.5% |
| Real Estate | 0.4% |
RMAFX Performance
Total returns for RMAFX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.7% |
| 1 year | 7.4% |
| 3 years (annualised) | 5.1% |
| 5 years (annualised) | 1.0% |
RMAFX Risk Information
Risk metrics for RMAFX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.1%
RMAFX Costs and Fees
RMAFX costs about $32 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.32%
- Gross expense ratio: 0.32%
- Portfolio turnover: 428%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
RMAFX Cashflows
Over the 12 months to 2026-02, American Funds Mortgage Fund had net inflows of $1.06B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | −$6.69M |
| 2026-01 | $617.97M |
| 2025-12 | $146.07M |
| 2025-11 | $29.40M |
| 2025-10 | $103.72M |
| 2025-09 | $89.47M |
RMAFX Debt Constituents
Largest debt holdings of American Funds Mortgage Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Federal Home Loan Banks | 1.90% |
| Federal Home Loan Banks | 1.87% |
| Federal Home Loan Banks | 1.71% |
| United States Treasury | 1.62% |
| Federal Home Loan Banks | 1.52% |
| Federal Home Loan Banks | 1.51% |
| Federal Home Loan Banks | 1.51% |
| Federal Home Loan Banks | 1.51% |
| Federal Home Loan Banks | 1.29% |
| Federal Home Loan Banks | 1.22% |
RMAFX Prospectus and SEC Filings
Official American Funds Mortgage Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Securitized (MBS/ABS/CMBS) 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.