SUPN
Supernus Pharmaceuticals, Inc.
stockNASDAQ
At CloseOct 28, 2026 3:59:51 PM EDT
41.15USD+0.464%(+0.19)1,099,364
After-hoursOct 28, 2026 4:46:30 PM EDT
40.39USD-1.842%(-0.76)
As of 2026-10-15, there were 4,043,677 shares short with a short interest of 7.41%.
SUPN Short Interest - Official
SUPN Short Position Change - Official
SUPN Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | 7.41 | 4,043,677 | 4.93 | -942,252 | -18.90 | 58,224,143 | 54,534,846 |
| 2026-09-30 | 9.16 | 4,985,929 | 7.38 | -3,492 | -0.07 | 58,224,143 | 54,441,760 |
| 2026-09-15 | 9.16 | 4,989,421 | 8.65 | +317,561 | +6.80 | 58,224,143 | 54,441,760 |
| 2026-08-31 | 8.58 | 4,671,860 | 8.26 | +524,231 | +12.64 | 58,168,001 | 54,441,760 |
| 2026-08-14 | 7.62 | 4,147,629 | 2.80 | -669,294 | -13.89 | 58,168,001 | 54,441,760 |
| 2026-07-31 | 8.85 | 4,816,923 | 9.51 | -33,938 | -0.70 | 58,039,721 | 54,441,760 |
| 2026-07-15 | 8.91 | 4,850,861 | 5.12 | -2,291,942 | -32.09 | 58,039,721 | 54,441,818 |
| 2026-06-30 | 13.13 | 7,142,803 | 6.96 | +1,039,373 | +17.03 | 58,039,721 | 54,410,767 |
| 2026-06-15 | 11.21 | 6,103,430 | 10.12 | +1,372,172 | +29.00 | 58,039,721 | 54,441,818 |
| 2026-05-15 | 8.62 | 4,731,258 | 5.29 | +10,024 | +0.21 | 58,039,721 | 54,884,545 |
| 2026-04-30 | 8.61 | 4,721,234 | 8.54 | -11,289 | -0.24 | 57,581,712 | 54,857,130 |
| 2026-04-15 | 8.63 | 4,732,523 | 9.31 | +199,656 | +4.40 | 57,581,712 | 54,857,130 |
| 2026-03-31 | 8.26 | 4,532,867 | 7.52 | +344,017 | +8.21 | 57,581,712 | 54,857,130 |
| 2026-03-13 | 7.64 | 4,188,850 | 6.51 | +107,466 | +2.63 | 57,581,712 | 54,857,130 |
| 2026-02-27 | 7.44 | 4,081,384 | 4.24 | +60,346 | +1.50 | 57,457,462 | 54,857,130 |
| 2026-02-13 | 7.33 | 4,021,038 | 5.70 | +30,958 | +0.78 | 57,339,350 | 54,857,130 |
| 2026-01-30 | 7.27 | 3,990,080 | 5.60 | -132,319 | -3.21 | 57,339,350 | 54,857,130 |
| 2026-01-15 | 7.51 | 4,122,399 | 6.55 | -261,912 | -5.97 | 57,339,350 | 54,857,130 |
| 2025-12-31 | 7.99 | 4,384,311 | 6.99 | -428,423 | -8.90 | 57,339,350 | 54,857,130 |
| 2025-12-15 | 8.77 | 4,812,734 | 8.14 | -181,969 | -3.64 | 57,339,350 | 54,857,130 |
| 2025-11-28 | 9.17 | 4,994,703 | 6.80 | -207,976 | -4.00 | 57,339,350 | 54,447,258 |
| 2025-11-14 | 10.39 | 5,202,679 | 3.68 | +332,662 | +6.83 | 57,339,350 | 50,068,147 |
| 2025-10-31 | 9.98 | 4,870,017 | 6.25 | -84,748 | -1.71 | 56,073,088 | 48,802,091 |
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.