PMMF
iShares Prime Money Market ETF
stockNYSEETF
Market OpenOct 5, 2026 12:21:20 PM EDT
100.30USD+0.030%(+0.03)176,883
100.30Bid100.31Ask0.01SpreadAs of 2026-09-15, there were 16,017 shares short with a short interest of 0.22%.
PMMF Short Interest - Official
Short Interest
PMMF Short Position Change - Official
Short Position Change
PMMF Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | 0.22 | 16,017 | 1.00 | -6,045 | -27.40 | 7,330,000 | 7,330,000 |
| 2026-08-31 | 0.31 | 22,062 | 1.00 | -51,108 | -69.85 | 7,060,000 | 7,060,000 |
| 2026-08-14 | 1.10 | 73,170 | 1.00 | +51,769 | +241.90 | 6,680,000 | 6,680,000 |
| 2026-07-31 | 0.32 | 21,401 | 1.00 | +11,229 | +110.39 | 6,620,000 | 6,620,000 |
| 2026-07-15 | 0.16 | 10,172 | 1.00 | -36,743 | -78.32 | 6,530,000 | 6,530,000 |
| 2026-06-30 | 0.74 | 46,915 | 1.00 | +43,628 | +1,327.29 | 6,320,000 | 6,320,000 |
| 2026-06-15 | 0.05 | 3,287 | 1.00 | -11,984 | -78.48 | 6,330,000 | 6,330,000 |
| 2026-05-15 | 0.26 | 15,271 | 1.00 | -3,105 | -16.90 | 5,800,000 | 5,800,000 |
| 2026-04-30 | 0.36 | 18,376 | 1.00 | +7,937 | +76.03 | 5,170,000 | 5,170,000 |
| 2026-04-15 | 0.20 | 10,439 | 1.00 | +3,738 | +55.78 | 5,320,000 | 5,320,000 |
| 2026-03-31 | 0.14 | 6,701 | 1.00 | -164,403 | -96.08 | 4,820,000 | 4,820,000 |
| 2026-03-13 | 3.85 | 171,104 | 1.57 | +165,176 | +2,786.37 | 4,440,000 | 4,440,000 |
| 2026-02-27 | 0.13 | 5,928 | 1.00 | -5,066 | -46.08 | 4,680,000 | 4,680,000 |
| 2026-02-13 | 0.24 | 10,994 | 1.00 | +6,453 | +142.11 | 4,670,000 | 4,670,000 |
| 2026-01-30 | 0.10 | 4,541 | 1.00 | -71,807 | -94.05 | 4,670,000 | 4,670,000 |
| 2026-01-15 | 1.77 | 76,348 | 1.00 | +31,649 | +70.80 | 4,320,000 | 4,320,000 |
| 2025-12-31 | 1.07 | 44,699 | 1.00 | +11,055 | +32.86 | 4,190,000 | 4,190,000 |
| 2025-12-15 | 0.82 | 33,644 | 1.00 | +26,335 | +360.31 | 4,110,000 | 4,110,000 |
| 2025-11-28 | 0.18 | 7,309 | 1.00 | -8,860 | -54.80 | 4,050,000 | 4,050,000 |
| 2025-11-14 | 0.50 | 16,169 | 1.00 | -16,045 | -49.81 | 3,260,000 | 3,260,000 |
| 2025-10-31 | 0.99 | 32,214 | 1.00 | +15,753 | +95.70 | 3,260,000 | 3,260,000 |
| 2025-10-15 | 0.50 | 16,461 | 1.00 | -9,825 | -37.38 | 3,260,000 | 3,260,000 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.