IOSP
Innospec Inc.
stockNASDAQ
At CloseNov 6, 2026 3:59:58 PM EST
78.09USD-1.314%(-1.04)238,347
After-hoursNov 6, 2026 4:26:30 PM EST
78.21USD+0.154%(+0.12)
As of 2026-10-15, there were 483,179 shares short with a short interest of 1.99%.
IOSP Short Interest - Official
IOSP Short Position Change - Official
IOSP 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 | 1.99 | 483,179 | 2.32 | -8,932 | -1.82 | 24,631,047 | 24,322,174 |
| 2026-09-30 | 2.02 | 492,111 | 1.87 | -18,941 | -3.71 | 24,631,047 | 24,331,761 |
| 2026-09-15 | 2.10 | 511,052 | 3.41 | +44,318 | +9.50 | 24,631,047 | 24,331,761 |
| 2026-08-31 | 1.92 | 466,734 | 2.83 | +2,856 | +0.62 | 24,631,047 | 24,331,761 |
| 2026-08-14 | 1.91 | 463,878 | 2.39 | +8,719 | +1.92 | 24,631,047 | 24,331,761 |
| 2026-07-31 | 1.87 | 455,159 | 2.97 | -29,730 | -6.13 | 24,631,047 | 24,318,972 |
| 2026-07-15 | 1.99 | 484,889 | 3.72 | -2,235 | -0.46 | 24,631,047 | 24,318,972 |
| 2026-06-30 | 2.00 | 487,124 | 1.97 | +78,940 | +19.34 | 24,631,047 | 24,318,972 |
| 2026-06-15 | 1.68 | 408,184 | 2.16 | +66,987 | +19.63 | 24,631,047 | 24,318,972 |
| 2026-05-15 | 1.40 | 341,197 | 1.22 | -149,605 | -30.48 | 24,631,047 | 24,323,405 |
| 2026-04-30 | 2.01 | 490,802 | 3.17 | +30,050 | +6.52 | 24,890,467 | 24,437,304 |
| 2026-04-15 | 1.89 | 460,752 | 2.15 | +57,104 | +14.15 | 24,890,467 | 24,437,304 |
| 2026-03-31 | 1.65 | 403,648 | 1.12 | +82,634 | +25.74 | 24,890,467 | 24,437,304 |
| 2026-03-13 | 1.31 | 321,014 | 1.39 | -102,856 | -24.27 | 24,777,859 | 24,437,304 |
| 2026-02-27 | 1.73 | 423,870 | 1.77 | +39,961 | +10.41 | 24,777,582 | 24,437,304 |
| 2026-02-13 | 1.57 | 383,909 | 1.96 | +86,010 | +28.87 | 24,777,582 | 24,437,304 |
| 2026-01-30 | 1.22 | 297,899 | 2.47 | -61,772 | -17.17 | 24,777,582 | 24,437,304 |
| 2026-01-15 | 1.47 | 359,671 | 2.26 | -161,360 | -30.97 | 24,777,582 | 24,437,304 |
| 2025-12-31 | 2.13 | 521,031 | 2.23 | +93,565 | +21.89 | 24,777,582 | 24,437,304 |
| 2025-12-15 | 1.75 | 427,466 | 1.51 | -62,564 | -12.77 | 24,777,582 | 24,437,304 |
| 2025-11-28 | 2.00 | 490,030 | 1.48 | +44,506 | +9.99 | 24,777,582 | 24,482,977 |
| 2025-11-14 | 1.82 | 445,524 | 2.15 | -81,848 | -15.52 | 24,777,582 | 24,469,101 |
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.