IRWD
Ironwood Pharmaceuticals, Inc. - Class A
stockNASDAQ
Market OpenOct 21, 2026 2:35:09 PM EDT
3.57USD-1.791%(-0.06)822,404
Pre-marketOct 21, 2026 9:29:54 AM EDT
3.68USD+1.377%(+0.05)
As of 2026-09-30, there were 15,567,942 shares short with a short interest of 9.82%.
IRWD Short Interest - Official
IRWD Short Position Change - Official
IRWD 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 | 9.82 | 15,567,942 | 6.19 | -3,161,044 | -16.88 | 165,239,947 | 158,479,190 |
| 2026-09-15 | 11.82 | 18,728,986 | 13.11 | +1,074,309 | +6.09 | 165,239,947 | 158,479,190 |
| 2026-08-31 | 11.14 | 17,654,677 | 11.90 | -411,705 | -2.28 | 165,239,947 | 158,479,190 |
| 2026-08-14 | 11.40 | 18,066,382 | 6.44 | +1,523,979 | +9.21 | 165,239,947 | 158,479,190 |
| 2026-07-31 | 10.44 | 16,542,403 | 10.04 | -649,489 | -3.78 | 164,613,406 | 158,479,190 |
| 2026-07-15 | 10.84 | 17,191,892 | 6.32 | +961,864 | +5.93 | 164,613,406 | 158,617,300 |
| 2026-06-30 | 10.24 | 16,230,028 | 5.65 | +331,037 | +2.08 | 164,613,406 | 158,489,561 |
| 2026-06-15 | 10.04 | 15,898,991 | 8.18 | -1,435,288 | -8.28 | 164,613,406 | 158,322,149 |
| 2026-05-15 | 10.98 | 17,334,279 | 5.77 | +67,858 | +0.39 | 164,613,406 | 157,873,743 |
| 2026-04-30 | 11.02 | 17,266,421 | 10.51 | -924,681 | -5.08 | 164,613,406 | 156,689,809 |
| 2026-04-15 | 11.61 | 18,191,102 | 10.20 | +286,410 | +1.60 | 163,058,316 | 156,689,809 |
| 2026-03-31 | 11.43 | 17,904,692 | 4.67 | +4,201,105 | +30.66 | 163,058,316 | 156,689,809 |
| 2026-03-13 | 8.75 | 13,703,587 | 6.65 | +786,302 | +6.09 | 163,058,316 | 156,689,809 |
| 2026-02-27 | 8.24 | 12,917,285 | 3.24 | +1,758,061 | +15.75 | 162,678,647 | 156,689,809 |
| 2026-02-13 | 7.12 | 11,159,224 | 4.52 | +1,694,708 | +17.91 | 162,678,647 | 156,689,809 |
| 2026-01-30 | 6.04 | 9,464,516 | 3.52 | +457,037 | +5.07 | 162,678,647 | 156,689,809 |
| 2026-01-15 | 5.75 | 9,007,479 | 1.00 | +860,029 | +10.56 | 162,678,647 | 156,689,809 |
| 2025-12-31 | 5.20 | 8,147,450 | 3.22 | +817,686 | +11.16 | 162,678,647 | 156,689,809 |
| 2025-12-15 | 4.68 | 7,329,764 | 3.79 | -134,767 | -1.81 | 162,678,647 | 156,693,876 |
| 2025-11-28 | 4.76 | 7,464,531 | 2.75 | +309,576 | +4.33 | 162,678,647 | 156,684,929 |
| 2025-11-14 | 4.57 | 7,154,955 | 1.48 | +2,392,410 | +50.23 | 162,678,647 | 156,588,311 |
| 2025-10-31 | 3.05 | 4,762,545 | 4.03 | +60,530 | +1.29 | 162,434,130 | 156,352,958 |
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.