PI
Impinj, Inc. Common Stock
stockNASDAQ
At CloseOct 2, 2026 3:59:46 PM EDT
189.63USD+3.133%(+5.76)479,565
Pre-marketOct 5, 2026 8:12:30 AM EDT
190.01USD+0.211%(+0.40)
As of 2026-09-15, there were 3,031,264 shares short with a short interest of 10.25%.
PI Short Interest - Official
Short Interest
PI Short Position Change - Official
Short Position Change
PI 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 | 10.25 | 3,031,264 | 7.93 | +295,526 | +10.80 | 30,554,413 | 29,571,172 |
| 2026-08-31 | 9.25 | 2,735,738 | 8.38 | -219,652 | -7.43 | 30,554,413 | 29,571,172 |
| 2026-08-14 | 9.99 | 2,955,390 | 5.79 | -46,173 | -1.54 | 30,554,413 | 29,571,172 |
| 2026-07-31 | 10.15 | 3,001,563 | 6.41 | -349,127 | -10.42 | 30,554,413 | 29,568,117 |
| 2026-07-15 | 11.37 | 3,350,690 | 12.17 | +15,248 | +0.46 | 30,459,185 | 29,466,216 |
| 2026-06-30 | 11.32 | 3,335,442 | 7.37 | -81,008 | -2.37 | 30,459,185 | 29,468,043 |
| 2026-06-15 | 11.60 | 3,416,450 | 7.62 | +519,189 | +17.92 | 30,459,185 | 29,458,601 |
| 2026-05-15 | 9.82 | 2,897,261 | 5.98 | -153,230 | -5.02 | 30,459,185 | 29,490,278 |
| 2026-04-30 | 10.46 | 3,050,491 | 4.59 | -23,969 | -0.78 | 30,459,059 | 29,169,727 |
| 2026-04-15 | 10.54 | 3,074,460 | 10.50 | -16,599 | -0.54 | 30,231,686 | 29,169,727 |
| 2026-03-31 | 10.60 | 3,091,059 | 6.51 | +90,148 | +3.00 | 30,231,686 | 29,169,727 |
| 2026-03-13 | 10.29 | 3,000,911 | 3.59 | +22,319 | +0.75 | 30,231,686 | 29,169,727 |
| 2026-02-27 | 10.21 | 2,978,592 | 5.88 | +227,789 | +8.28 | 30,231,686 | 29,169,727 |
| 2026-02-13 | 9.43 | 2,750,803 | 2.34 | +207,728 | +8.17 | 30,231,686 | 29,169,727 |
| 2026-01-30 | 8.72 | 2,543,075 | 3.95 | -81,065 | -3.09 | 30,109,132 | 29,169,727 |
| 2026-01-15 | 9.00 | 2,624,140 | 3.69 | -19,042 | -0.72 | 30,109,132 | 29,169,727 |
| 2025-12-31 | 9.06 | 2,643,182 | 4.63 | -184,357 | -6.52 | 30,109,132 | 29,169,727 |
| 2025-12-15 | 9.69 | 2,827,539 | 4.30 | -148,645 | -4.99 | 30,109,132 | 29,169,727 |
| 2025-11-28 | 10.19 | 2,976,184 | 5.90 | +401,485 | +15.59 | 30,109,132 | 29,215,311 |
| 2025-11-14 | 9.41 | 2,574,699 | 4.91 | +10,381 | +0.40 | 30,109,132 | 27,353,845 |
| 2025-10-31 | 9.41 | 2,564,318 | 4.03 | -557,106 | -17.85 | 30,109,132 | 27,255,690 |
| 2025-10-15 | 11.85 | 3,121,424 | 6.89 | -4,521 | -0.14 | 29,089,692 | 26,332,862 |
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.