GERN
Geron Corp
stockNASDAQ
At CloseOct 2, 2026 3:59:39 PM EDT
1.20USD-1.240%(-0.01)14,719,671
Pre-marketOct 2, 2026 8:57:30 AM EDT
1.2276USD+1.455%(+0.0176)
After-hoursOct 2, 2026 4:57:30 PM EDT
1.2099USD+1.247%(+0.0149)
As of 2026-09-15, there were 82,618,677 shares short with a short interest of 14.75%.
GERN Short Interest - Official
Short Interest
GERN Short Position Change - Official
Short Position Change
GERN 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 | 14.75 | 82,618,677 | 6.69 | -2,474,838 | -2.91 | 642,473,409 | 560,064,695 |
| 2026-08-31 | 15.19 | 85,093,515 | 10.99 | +4,492,819 | +5.57 | 642,473,409 | 560,064,695 |
| 2026-08-14 | 14.39 | 80,600,696 | 5.81 | +3,793,412 | +4.94 | 641,520,974 | 560,064,695 |
| 2026-07-31 | 14.34 | 76,807,284 | 9.90 | +6,885,798 | +9.85 | 641,520,974 | 535,702,089 |
| 2026-07-15 | 13.05 | 69,921,486 | 6.75 | -10,297,763 | -12.84 | 641,520,974 | 535,702,089 |
| 2026-06-30 | 14.97 | 80,219,249 | 4.70 | +5,372,809 | +7.18 | 641,520,974 | 535,708,505 |
| 2026-06-15 | 13.97 | 74,846,440 | 5.89 | +4,692,928 | +6.69 | 641,520,974 | 535,708,505 |
| 2026-05-15 | 13.94 | 70,153,512 | 3.77 | -5,543,154 | -7.32 | 641,520,974 | 503,196,222 |
| 2026-04-30 | 14.11 | 75,696,666 | 5.52 | -6,458,438 | -7.86 | 640,900,330 | 536,307,801 |
| 2026-04-15 | 15.32 | 82,155,104 | 3.57 | +5,488,769 | +7.16 | 640,900,330 | 536,307,801 |
| 2026-03-31 | 14.30 | 76,666,335 | 4.17 | +13,442,557 | +21.26 | 640,544,661 | 536,307,801 |
| 2026-03-13 | 11.79 | 63,223,778 | 3.45 | +2,601,903 | +4.29 | 640,544,661 | 536,307,801 |
| 2026-02-27 | 11.30 | 60,621,875 | 2.91 | -4,405,867 | -6.78 | 638,355,275 | 536,307,801 |
| 2026-02-13 | 12.13 | 65,027,742 | 4.30 | +6,571,057 | +11.24 | 638,355,275 | 536,307,801 |
| 2026-01-30 | 10.90 | 58,456,685 | 4.64 | -11,996,146 | -17.03 | 638,355,275 | 536,307,801 |
| 2026-01-15 | 13.14 | 70,452,831 | 7.45 | -804,139 | -1.13 | 638,355,275 | 536,307,801 |
| 2025-12-31 | 13.29 | 71,256,970 | 11.61 | -4,758,585 | -6.26 | 638,355,275 | 536,307,801 |
| 2025-12-15 | 14.17 | 76,015,555 | 10.25 | -1,361,100 | -1.76 | 638,355,275 | 536,307,801 |
| 2025-11-28 | 14.43 | 77,376,655 | 11.02 | -227,054 | -0.29 | 638,355,275 | 536,307,801 |
| 2025-11-14 | 14.52 | 77,603,709 | 6.99 | -7,656,231 | -8.98 | 638,355,275 | 534,405,502 |
| 2025-10-31 | 15.96 | 85,259,940 | 13.95 | -1,657,442 | -1.91 | 638,017,073 | 534,064,951 |
| 2025-10-15 | 16.27 | 86,917,382 | 10.49 | -2,857,642 | -3.18 | 638,017,073 | 534,077,712 |
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.