Contract OI history
Back to COSTOct 23, 2026 EXPIRATION
COST $1040.00 Call
COST261023C01040000
Latest saved OI2,040Oct 23, 2026
Last change-418vs 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, 2026Viewing | 2,040 | -418 |
| Oct 21, 2026 | 2,458 | +2,190 |
| Oct 16, 2026 | 268 | +12 |
| Oct 15, 2026 | 256 | +5 |
| Oct 14, 2026 | 251 | 0 |
| Oct 13, 2026 | 251 | +3 |
| Oct 09, 2026 | 248 | No prior observation |