Contract OI history
Back to HSTJan 15, 2027 EXPIRATION
HST $26.13 Call
HST270115C00026130
Latest saved OI328Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.
| Market date | Open interest | Change vs prior saved day |
|---|---|---|
| Oct 23, 2026 | 328 | +6 |
| Oct 21, 2026Viewing | 322 | +24 |
| Oct 16, 2026 | 298 | 0 |
| Oct 15, 2026 | 298 | 0 |
| Oct 14, 2026 | 298 | 0 |
| Oct 13, 2026 | 298 | 0 |
| Oct 09, 2026 | 298 | No prior observation |