Highest-yielding prime money market funds
Ranked by June 2026 month-end SEC 7-day net yield (≥$100M net assets).
Data: June 2026 month-end SEC filings
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.
- The highest 7-day net yield among prime money market funds with at least $100 million in net assets is 3.75%, reported by JIMXX (JPMorgan Prime Money Market Fund) as of .
- 68 prime classes (≥$100M) reported a 7-day yield for June 2026; the median was 3.55%.
| # | Ticker | Fund | Category | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|---|---|
| 1 | JIMXX | JPMorgan Prime Money Market Fund | Prime | 3.75% | $15.4B | $50,000,000 |
| 2 | MWMXX | Money Market Portfolio | Prime | 3.72% | $3.5B | $1,000,000 |
| 3 | MAPXX | Money Market Portfolio | Prime | 3.72% | $126.7M | $1,000,000 |
| 4 | CJPXX | JPMorgan Prime Money Market Fund | Prime | 3.70% | $52.0B | $50,000,000 |
| 5 | POIXX | FEDERATED HERMES INSTITUTIONAL PRIME OBLIGATIONS FUND | Prime | 3.70% | $16.3B | $500,000 |
| 6 | MPFXX | Prime Portfolio | Prime | 3.69% | $13.1B | $10,000,000 |
| 7 | IPPXX | Invesco Premier Portfolio | Prime | 3.69% | $10.2B | $1,000 |
| 8 | JPAXX | JPMorgan Prime Money Market Fund | Prime | 3.69% | $1.1B | $5,000,000 |
| 9 | CASXX | Prime Portfolio | Prime | 3.69% | $1.1B | $5,000,000 |
| 10 | EJPXX | JPMorgan Prime Money Market Fund | Prime | 3.69% | $637.6M | $50,000,000 |
| 11 | IMRXX | Invesco Premier Portfolio | Prime | 3.69% | $277.1M | $1,000 |
| 12 | IPYXX | Prime Portfolio | Prime | 3.69% | $209.1M | $50,000,000 |
| 13 | WMPXX | Allspring Money Market Fund | Prime | 3.68% | $41.0B | $10,000,000 |
| 14 | TMCXX | TEMPCASH | Prime | 3.68% | $24.1B | $3,000,000 |
| 15 | CJLXX | JPMorgan Liquid Assets Money Market Fund | Prime | 3.68% | $22.2B | $50,000,000 |
| 16 | FMJXX | Goldman Sachs Investor Fund - Money Market | Prime | 3.68% | $7.6B | $10,000,000 |
| 17 | PCOXX | FEDERATED HERMES PRIME CASH OBLIGATIONS FUND | Prime | 3.67% | $91.9B | $500,000 |
| 18 | FXRXX | Retail Prime Obligations Fund | Prime | 3.67% | $2.4B | $50,000,000 |
| 19 | PCVXX | FEDERATED HERMES PRIME CASH OBLIGATIONS FUND | Prime | 3.67% | $2.2B | $250,000 |
| 20 | UPPXX | UBS Prime Preferred Fund | Prime | 3.66% | $8.8B | $50,000,000 |
| 21 | JINXX | JPMorgan Prime Money Market Fund | Prime | 3.65% | $13.2B | $10,000,000 |
| 22 | PIMXX | Money Market Portfolio | Prime | 3.65% | $196.6M | None |
| 23 | SNAXX | Schwab Prime Advantage Money Fund | Prime | 3.64% | $141.3B | $1,000,000 |
| 24 | IJLXX | JPMorgan Liquid Assets Money Market Fund | Prime | 3.64% | $13.0B | $10,000,000 |
| 25 | FNSXX | Fidelity Investments Money Market Money Market Portfolio | Prime | 3.63% | $84.0B | $10,000,000 |
Screen: ticker share classes with at least $100 million in net assets and a reported 7-day net yield on the June 2026 month-end filings (578 of 873 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 June 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 3.75%, reported by JIMXX (JPMorgan Prime Money Market Fund).