PESI
Perma-Fix Environmental Services, Inc.
stockNASDAQ
At CloseOct 16, 2026 3:59:55 PM EDT
12.31USD-7.374%(-0.98)327,433
As of 2026-09-30, there were 3,203,755 shares short with a short interest of 18.45%.
PESI Short Interest - Official
PESI Short Position Change - Official
PESI Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | 18.45 | 3,203,755 | 8.13 | +530,708 | +19.85 | 21,218,351 | 17,363,638 |
| 2026-09-15 | 15.39 | 2,673,047 | 11.96 | +377,632 | +16.45 | 21,218,351 | 17,363,638 |
| 2026-08-31 | 13.22 | 2,295,415 | 7.03 | -487,815 | -17.53 | 21,218,351 | 17,363,638 |
| 2026-08-14 | 16.03 | 2,783,230 | 4.39 | +683,100 | +32.53 | 21,218,351 | 17,363,638 |
| 2026-07-31 | 12.09 | 2,100,130 | 3.35 | -215,077 | -9.29 | 21,203,552 | 17,363,638 |
| 2026-07-15 | 13.33 | 2,315,207 | 5.67 | +578,737 | +33.33 | 21,203,552 | 17,365,680 |
| 2026-06-30 | 10.00 | 1,736,470 | 4.47 | -194,008 | -10.05 | 21,203,552 | 17,372,549 |
| 2026-06-15 | 11.25 | 1,930,478 | 10.41 | +424,231 | +28.16 | 21,203,552 | 17,157,459 |
| 2026-05-15 | 8.78 | 1,506,247 | 4.55 | +116,461 | +8.38 | 18,564,581 | 17,161,580 |
| 2026-04-30 | 8.09 | 1,389,786 | 13.33 | +56,117 | +4.21 | 18,547,539 | 17,185,316 |
| 2026-04-15 | 7.76 | 1,333,669 | 11.40 | -132,037 | -9.01 | 18,547,539 | 17,185,316 |
| 2026-03-31 | 8.53 | 1,465,706 | 5.48 | +260,846 | +21.65 | 18,547,539 | 17,185,316 |
| 2026-03-13 | 7.01 | 1,204,860 | 11.16 | +63,147 | +5.53 | 18,517,662 | 17,185,316 |
| 2026-02-27 | 6.64 | 1,141,713 | 8.48 | -58,996 | -4.91 | 18,517,662 | 17,185,316 |
| 2026-02-13 | 6.99 | 1,200,709 | 8.06 | -104,722 | -8.02 | 18,517,662 | 17,185,316 |
| 2026-01-30 | 7.60 | 1,305,431 | 9.22 | -72,657 | -5.27 | 18,517,662 | 17,185,316 |
| 2026-01-15 | 8.02 | 1,378,088 | 16.74 | -9,100 | -0.66 | 18,517,662 | 17,185,316 |
| 2025-12-31 | 8.07 | 1,387,188 | 13.28 | -135,169 | -8.88 | 18,517,662 | 17,185,316 |
| 2025-12-15 | 8.87 | 1,522,357 | 15.76 | +8,221 | +0.54 | 18,517,662 | 17,171,243 |
| 2025-11-28 | 8.82 | 1,514,136 | 14.69 | +68,981 | +4.77 | 18,517,662 | 17,171,243 |
| 2025-11-14 | 8.42 | 1,445,155 | 5.31 | -57,992 | -3.86 | 18,517,662 | 17,171,243 |
| 2025-10-31 | 8.91 | 1,503,147 | 7.46 | -49,348 | -3.18 | 18,470,201 | 16,871,013 |
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.