FZDXX — Fidelity Money Market Fund
7-day yield, assets, and how it ranks — from the June 2026 month-end N-MFP filing.
All figures are from the June 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.
7-day net yield
3.47%
as of
Net assets (class)
$121.8B
June 2026 month-end
Category
Prime
fund's own N-MFP classification
Minimum initial investment
$100,000
as reported on N-MFP
- As of the Form N-MFP filing (June 2026 month-end), FZDXX (Fidelity Money Market Fund) has a 7-day net yield of 3.47%.
- FZDXX's 7-day yield ranks #309 of 873 US money-market fund ticker share classes reporting a yield for June 2026.
- FZDXX is a Prime money-market fund share class with $121.8B in net assets (#15 of 873 ticker classes by size).
- The fund's series-level 7-day gross yield was 3.77% — the 0.30-point gap to this class's net yield reflects fund expenses.
Other share classes of this fund
| Class | Ticker | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|
| Fidelity Money Market Fund | SPRXX | 3.35% | $11.8B | None |
Fund context & source
Fidelity Money Market Fund is a series of Fidelity Hereford Street Trust (SEC series ID S000007052). The whole series held $133.6B across all share classes at June 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.