Contract OI history
Back to COSTJan 21, 2028 EXPIRATION
COST $1080.00 Call
COST280121C01080000
Latest saved OI236Oct 23, 2026
Last change-15vs 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 | 236 | -15 |
| Oct 21, 2026 | 251 | +30 |
| Oct 16, 2026 | 221 | +5 |
| Oct 15, 2026 | 216 | -1 |
| Oct 14, 2026 | 217 | 0 |
| Oct 13, 2026 | 217 | 0 |
| Oct 09, 2026 | 217 | No prior observation |