SPAXX vs SWVXX vs VMFXX
The default money-market funds at Fidelity, Schwab, and Vanguard - August 2026 month-end filings.
Data: August 2026 month-end SEC filings
All figures are from the August 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 August 2026 month-end SEC filings, the three big-brokerage money-market flagships rank: VMFXX 3.63%, SWVXX 3.53%, SPAXX 3.33%.
| SPAXX Fidelity |
SWVXX Schwab |
VMFXX Vanguard | |
|---|---|---|---|
| Fund | Fidelity Government Money Market Fund | Schwab Prime Advantage Money Fund | Vanguard Federal Money Market Fund |
| Category | Government | Prime | Government |
| 7-day net yield | 3.33% | 3.53% | 3.63% |
| Yield as of | |||
| Net assets (class) | $431.2B | $249.0B | $375.0B |
| Implied expense gap | 0.42% | 0.34% | 0.11% |
| WAM / WAL (days) | 42 / 110 | 37 / 56 | 24 / 52 |
| Daily / weekly liquid | 59.0% / 74.0% | 39.1% / 55.2% | 52.5% / 68.3% |
| Minimum investment | None | None | $3,000 |
Five-year yield history
FAQ
Which pays more: SPAXX, SWVXX, or VMFXX?
As of the August 2026 month-end SEC Form N-MFP filings: VMFXX 3.63%, SWVXX 3.53%, SPAXX 3.33%. SWVXX is a prime fund (corporate paper); SPAXX and VMFXX are government funds. Yields move daily - these are month-end regulatory figures.
Numbers only - no recommendation. Pairwise pages: SWVXX vs SPAXX · VMFXX vs SPAXX · VMFXX vs SWVXX