OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CI $280.00 Put

CI270115P00280000

Latest saved OI286Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $280.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2861430 2026-10-02: 265 OI2026-10-05: 265 OI2026-10-06: 265 OI2026-10-07: 265 OI2026-10-08: 265 OI2026-10-09: 266 OI2026-10-13: 269 OI2026-10-14: 271 OI2026-10-15: 283 OI2026-10-16: 283 OI2026-10-21: 283 OI2026-10-23: 286 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing286+3
Oct 21, 20262830
Oct 16, 20262830
Oct 15, 2026283+12
Oct 14, 2026271+2
Oct 13, 2026269+3
Oct 09, 2026266+1
Oct 08, 20262650
Oct 07, 20262650
Oct 06, 20262650
Oct 05, 20262650
Oct 02, 2026265No prior observation