AFAXX - American Funds U.S. Government Money Market Fund
7-day yield, assets, and how it ranks - from the September 2026 month-end N-MFP filing.
Data: September 2026 month-end SEC filings
All figures are from the September 2026 month-end Form N-MFP filings (report date ) - money-market funds must file within five business days of month-end. Regulatory data, not live quotes.
- As of the Form N-MFP filing (September 2026 month-end), AFAXX (American Funds U.S. Government Money Market Fund) has a 7-day net yield of 3.37%.
- AFAXX's 7-day yield ranks #614 of 886 US money-market fund ticker share classes reporting a yield for September 2026.
- AFAXX is a Government money-market fund share class with $23.5B in net assets (#68 of 886 ticker classes by size).
- The fund's series-level 7-day gross yield was 3.89% - the 0.52-point gap to this class's net yield reflects fund expenses.
- At September 2026 month-end the fund's portfolio had a weighted average maturity (WAM) of 34 days and a weighted average life (WAL) of 48 days, with 67.0% of assets in daily liquid assets and 96.1% in weekly liquid assets (SEC minimums: 25% daily, 50% weekly).
- Twelve months earlier (September 2025) AFAXX's 7-day yield was 3.70% - it has moved down 0.33 points over the year.
- AFAXX's highest month-end 7-day yield in the SEC's structured data (since April 2016) is 4.98%, reported for October 2023.
Yield history
Portfolio (series level)
Other share classes of this fund
| Class | Ticker | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|
| 529A | AAFXX | 3.32% | $2.8B | $1,000 |
| F2 | AFGXX | 3.49% | $2.6B | $1,000 |
| R6 | RAFXX | 3.56% | $1.7B | $1,000 |
| R3 | RACXX | 3.00% | $912.1M | $1,000 |
| R4 | RADXX | 3.22% | $760.7M | $1,000 |
| R2 | RABXX | 2.47% | $692.8M | $1,000 |
| 529F2 | - | 3.46% | $460.8M | $1,000 |
| R5E | RAGXX | 3.42% | $336.7M | $1,000 |
| F3 | USGXX | 3.56% | $304.7M | $1,000 |
| F1 | AFFXX | 3.24% | $236.2M | $1,000 |
| R5 | RAEXX | 3.52% | $180.3M | $1,000 |
| C | AFCXX | 3.43% | $120.0M | $1,000 |
| R2E | RBEXX | 2.76% | $98.3M | $1,000 |
| 529E | EAFXX | 3.28% | $98.0M | $1,000 |
| R1 | RAAXX | 3.50% | $37.9M | $1,000 |
| 529C | CCFXX | 3.43% | $24.5M | $1,000 |
| ABLEA | AAZXX | 3.41% | $7.8M | $1,000 |
| 529F3 | - | 3.51% | $1.5M | $1,000 |
| ABLEF2 | - | 3.52% | $900,415 | $1,000 |
Fund context & source
American Funds U.S. Government Money Market Fund is a series of American Funds U.S. Government Money Market Fund (SEC series ID S000025394). The whole series held $34.8B across all share classes at September 2026 month-end.
This page shows the class's month-end regulatory filing, not a live quote - 7-day yields move daily. For today's yield, check the fund company's website. Verify the filing itself on EDGAR: N-MFP filings for this series.
FAQ
What is AFAXX's 7-day yield?
As of the September 2026 month-end SEC Form N-MFP filing (September 30, 2026), AFAXX (American Funds U.S. Government Money Market Fund) has a 7-day net yield of 3.37%.
Is AFAXX a government money market fund?
Yes - AFAXX is classified as a Government money-market fund in its own September 2026 Form N-MFP filing.
What is the minimum initial investment for AFAXX?
AFAXX reports a minimum initial investment of $1,000 on its September 2026 Form N-MFP filing.