OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CI $240.00 Put

CI270115P00240000

Latest saved OI636Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $240.00 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. 6363180 2026-10-02: 615 OI2026-10-05: 613 OI2026-10-06: 613 OI2026-10-07: 613 OI2026-10-08: 613 OI2026-10-09: 613 OI2026-10-13: 613 OI2026-10-14: 614 OI2026-10-15: 613 OI2026-10-16: 612 OI2026-10-21: 636 OI2026-10-23: 636 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, 2026Viewing6360
Oct 21, 2026636+24
Oct 16, 2026612-1
Oct 15, 2026613-1
Oct 14, 2026614+1
Oct 13, 20266130
Oct 09, 20266130
Oct 08, 20266130
Oct 07, 20266130
Oct 06, 20266130
Oct 05, 2026613-2
Oct 02, 2026615No prior observation