PBYI
PUMA BIOTECHNOLOGY INC
stockNASDAQ
At CloseOct 2, 2026 3:59:56 PM EDT
9.51USD-3.354%(-0.33)454,882
Pre-marketOct 2, 2026 8:45:30 AM EDT
9.84USD0.000%(0.00)
After-hoursOct 2, 2026 4:54:30 PM EDT
9.45USD-0.631%(-0.06)
As of 2026-09-15, there were 4,319,663 shares short with a short interest of 11.10%.
PBYI Short Interest - Official
Short Interest
PBYI Short Position Change - Official
Short Position Change
PBYI 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 | 11.10 | 4,319,663 | 13.80 | +45,139 | +1.06 | 51,620,066 | 38,903,981 |
| 2026-08-31 | 10.99 | 4,274,524 | 15.62 | +106,694 | +2.56 | 51,620,066 | 38,903,981 |
| 2026-08-14 | 10.71 | 4,167,830 | 11.39 | +41,435 | +1.00 | 51,620,066 | 38,903,981 |
| 2026-07-31 | 10.61 | 4,126,395 | 13.89 | +217,015 | +5.55 | 50,899,456 | 38,903,981 |
| 2026-07-15 | 10.05 | 3,909,380 | 10.65 | +280,902 | +7.74 | 50,899,456 | 38,903,981 |
| 2026-06-30 | 9.31 | 3,628,478 | 8.47 | -70,318 | -1.90 | 50,899,456 | 38,982,875 |
| 2026-06-15 | 9.46 | 3,698,796 | 18.41 | -495,429 | -11.81 | 50,899,456 | 39,092,309 |
| 2026-05-15 | 10.73 | 4,194,225 | 11.79 | +88,610 | +2.16 | 50,899,456 | 39,092,309 |
| 2026-04-30 | 10.63 | 4,105,615 | 18.59 | -50,882 | -1.22 | 50,891,675 | 38,615,713 |
| 2026-04-15 | 10.76 | 4,156,497 | 12.60 | +219,610 | +5.58 | 50,876,487 | 38,615,713 |
| 2026-03-31 | 10.20 | 3,936,887 | 16.64 | -172,442 | -4.20 | 50,876,487 | 38,615,713 |
| 2026-03-13 | 10.64 | 4,109,329 | 8.79 | +345,138 | +9.17 | 50,876,487 | 38,615,713 |
| 2026-02-27 | 9.75 | 3,764,191 | 7.50 | +101,368 | +2.77 | 50,391,107 | 38,615,713 |
| 2026-02-13 | 9.49 | 3,662,823 | 8.52 | +182,310 | +5.24 | 50,391,107 | 38,615,713 |
| 2026-01-30 | 9.01 | 3,480,513 | 7.79 | -110,840 | -3.09 | 50,391,107 | 38,615,713 |
| 2026-01-15 | 9.30 | 3,591,353 | 9.89 | +146,511 | +4.25 | 50,391,107 | 38,615,713 |
| 2025-12-31 | 8.92 | 3,444,842 | 9.61 | +13,984 | +0.41 | 50,391,107 | 38,615,713 |
| 2025-12-15 | 8.88 | 3,430,858 | 8.53 | +19,653 | +0.58 | 50,391,107 | 38,615,713 |
| 2025-11-28 | 8.83 | 3,411,205 | 8.42 | +78,308 | +2.35 | 50,391,107 | 38,615,713 |
| 2025-11-14 | 8.64 | 3,332,897 | 3.63 | -9,499 | -0.28 | 50,391,107 | 38,595,557 |
| 2025-10-31 | 8.67 | 3,342,396 | 8.38 | -18,542 | -0.55 | 50,370,723 | 38,562,818 |
| 2025-10-15 | 8.72 | 3,360,938 | 7.07 | -157,197 | -4.47 | 50,370,723 | 38,562,818 |
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.