SPRXX - Fidelity Money Market Fund
7-day yield, assets, and how it ranks - from the July 2026 month-end N-MFP filing.
Data: July 2026 month-end SEC filings
All figures are from the July 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 (July 2026 month-end), SPRXX (Fidelity Money Market Fund) has a 7-day net yield of 3.36%.
- SPRXX's 7-day yield ranks #458 of 870 US money-market fund ticker share classes reporting a yield for July 2026.
- SPRXX is a Prime money-market fund share class with $12.1B in net assets (#104 of 870 ticker classes by size).
- The fund's series-level 7-day gross yield was 3.78% - the 0.42-point gap to this class's net yield reflects fund expenses.
- At July 2026 month-end the fund's portfolio had a weighted average maturity (WAM) of 25 days and a weighted average life (WAL) of 26 days, with 71.0% of assets in daily liquid assets and 82.0% in weekly liquid assets (SEC minimums: 25% daily, 50% weekly).
- Twelve months earlier (July 2025) SPRXX's 7-day yield was 4.03% - it has moved down 0.67 points over the year.
- SPRXX's highest month-end 7-day yield in the SEC's structured data (since April 2016) is 5.10%, reported for December 2023.
Yield history
Portfolio (series level)
Other share classes of this fund
| Class | Ticker | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|
| Fidelity Money Market Fund - Premium Class | FZDXX | 3.48% | $121.3B | $100,000 |
Compare
SPAXX vs SPRXX · SWVXX vs SPRXX · SPRXX vs FZDXX · FDRXX vs SPRXX
Fund context & source
Fidelity Money Market Fund is a series of Fidelity Hereford Street Trust (SEC series ID S000007052). The whole series held $133.4B across all share classes at July 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 Fidelity. Verify the filing itself on EDGAR: N-MFP filings for this series.
State-tax note (2025 tax year)
Fidelity reports that 14.56% of SPRXX's 2025 dividend income came from US government obligations - the portion most states exempt from income tax. The fund did not meet the 50%-of-assets test that California, Connecticut, and New York require (source). Figures change each tax year. Full table and calculator: tax-equivalent yield.
FAQ
What is SPRXX's 7-day yield?
As of the July 2026 month-end SEC Form N-MFP filing (July 31, 2026), SPRXX (Fidelity Money Market Fund) has a 7-day net yield of 3.36%.
Is SPRXX a government money market fund?
No - SPRXX is classified as a Prime money-market fund in its own July 2026 Form N-MFP filing.
What is the minimum initial investment for SPRXX?
SPRXX reports a minimum initial investment of None on its July 2026 Form N-MFP filing.