NPYXX - Treasury Instruments Portfolio
7-day yield, assets, and how it ranks - from the August 2026 month-end N-MFP filing.
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 Form N-MFP filing (August 2026 month-end), NPYXX (Treasury Instruments Portfolio) has a 7-day net yield of 3.61%.
- NPYXX's 7-day yield ranks #102 of 870 US money-market fund ticker share classes reporting a yield for August 2026.
- NPYXX is a Government money-market fund share class with $8.2B in net assets (#131 of 870 ticker classes by size).
- The fund's series-level 7-day gross yield was 3.77% - the 0.16-point gap to this class's net yield reflects fund expenses.
- At August 2026 month-end the fund's portfolio had a weighted average maturity (WAM) of 41 days and a weighted average life (WAL) of 98 days, with 99.9% of assets in daily liquid assets and 99.9% in weekly liquid assets (SEC minimums: 25% daily, 50% weekly).
- Twelve months earlier (August 2025) NPYXX's 7-day yield was 4.20% - it has moved down 0.59 points over the year.
- NPYXX's highest month-end 7-day yield in the SEC's structured data (since April 2016) is 5.26%, reported for July 2024.
Yield history
Portfolio (series level)
Other share classes of this fund
| Class | Ticker | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|
| Shares | NTYXX | 3.66% | $3.7B | $5,000,000 |
| Siebert Williams Shank Shares | SWIXX | 3.66% | $125.1M | None |
| Digital Enabled Shares | NDEXX | 3.66% | $101,720 | None |
| Admin Shares | - | 3.56% | $100,232 | $5,000,000 |
| Service Shares | - | 0.00% | $0 | None |
Fund context & source
Treasury Instruments Portfolio is a series of Northern Institutional Funds (SEC series ID S000058876). The whole series held $12.0B across all share classes at August 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 Northern Trust. Verify the filing itself on EDGAR: N-MFP filings for this series.
FAQ
What is NPYXX's 7-day yield?
As of the August 2026 month-end SEC Form N-MFP filing (August 31, 2026), NPYXX (Treasury Instruments Portfolio) has a 7-day net yield of 3.61%.
Is NPYXX a government money market fund?
Yes - NPYXX is classified as a Government money-market fund in its own August 2026 Form N-MFP filing.
What is the minimum initial investment for NPYXX?
NPYXX reports a minimum initial investment of None on its August 2026 Form N-MFP filing.