Highest-yielding prime money market funds
Ranked by October 2026 month-end SEC 7-day net yield (≥$100M net assets).
Data: October 2026 month-end SEC filings
All figures are from the October 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.
- The highest 7-day net yield among prime money market funds with at least $100 million in net assets is 3.99%, reported by JIMXX (JPMorgan Prime Money Market Fund) as of .
- 70 prime classes (≥$100M) reported a 7-day yield for October 2026; the median was 3.82%.
| # | Ticker | Fund | Category | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|---|---|
| 1 | JIMXX | JPMorgan Prime Money Market Fund | Prime | 3.99% | $16.8B | $50,000,000 |
| 2 | MWMXX | Money Market Portfolio | Prime | 3.98% | $3.1B | $1,000,000 |
| 3 | PIMXX | Money Market Portfolio | Prime | 3.98% | $219.6M | None |
| 4 | MAPXX | Money Market Portfolio | Prime | 3.98% | $168.1M | $1,000,000 |
| 5 | TMCXX | TEMPCASH | Prime | 3.96% | $25.6B | $3,000,000 |
| 6 | MPFXX | Prime Portfolio | Prime | 3.96% | $12.8B | $10,000,000 |
| 7 | IPPXX | Invesco Premier Portfolio | Prime | 3.96% | $10.2B | $1,000 |
| 8 | CASXX | Prime Portfolio | Prime | 3.96% | $1.1B | $5,000,000 |
| 9 | IMRXX | Invesco Premier Portfolio | Prime | 3.96% | $227.5M | $1,000 |
| 10 | IMTXX | Prime Portfolio | Prime | 3.96% | $124.5M | $50,000,000 |
| 11 | POIXX | FEDERATED HERMES INSTITUTIONAL PRIME OBLIGATIONS FUND | Prime | 3.95% | $16.2B | $500,000 |
| 12 | FMJXX | Goldman Sachs Investor Fund - Money Market | Prime | 3.95% | $7.7B | $10,000,000 |
| 13 | FMDXX | Goldman Sachs Investor Fund - Money Market | Prime | 3.95% | $206.0M | $10,000,000 |
| 14 | CJPXX | JPMorgan Prime Money Market Fund | Prime | 3.94% | $61.0B | $50,000,000 |
| 15 | WMPXX | Allspring Money Market Fund | Prime | 3.94% | $41.7B | $10,000,000 |
| 16 | JPAXX | JPMorgan Prime Money Market Fund | Prime | 3.94% | $1.2B | $5,000,000 |
| 17 | EJPXX | JPMorgan Prime Money Market Fund | Prime | 3.94% | $736.2M | $50,000,000 |
| 18 | CJLXX | JPMorgan Liquid Assets Money Market Fund | Prime | 3.93% | $23.1B | $50,000,000 |
| 19 | FXRXX | Retail Prime Obligations Fund | Prime | 3.93% | $2.2B | $50,000,000 |
| 20 | SNAXX | Schwab Prime Advantage Money Fund | Prime | 3.92% | $141.9B | $1,000,000 |
| 21 | PCOXX | FEDERATED HERMES PRIME CASH OBLIGATIONS FUND | Prime | 3.92% | $92.9B | $500,000 |
| 22 | FNSXX | Fidelity Investments Money Market Money Market Portfolio | Prime | 3.92% | $83.6B | $10,000,000 |
| 23 | UPPXX | UBS Prime Preferred Fund | Prime | 3.92% | $8.1B | $50,000,000 |
| 24 | PCVXX | FEDERATED HERMES PRIME CASH OBLIGATIONS FUND | Prime | 3.92% | $2.2B | $250,000 |
| 25 | GMGXX | BNY Dreyfus Money Market Fund | Prime | 3.92% | $290.3M | $2,500 |
Screen: ticker share classes with at least $100 million in net assets and a reported 7-day net yield on the October 2026 month-end filings (586 of 885 ticker classes). Tiny classes are excluded because they report outlier yields; the full CSV has every class. Rankings are arithmetic on SEC filings - not recommendations.
FAQ
What is the highest-yielding prime money market fund?
As of the October 2026 month-end SEC Form N-MFP filings, the highest 7-day net yield among prime money market funds with at least $100 million in net assets is 3.99%, reported by JIMXX (JPMorgan Prime Money Market Fund).