OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CI $320.00 Call

CI270115C00320000

Latest saved OI241Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $320.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2411200 2026-10-02: 227 OI2026-10-05: 224 OI2026-10-06: 224 OI2026-10-07: 224 OI2026-10-08: 222 OI2026-10-09: 222 OI2026-10-13: 221 OI2026-10-14: 221 OI2026-10-15: 223 OI2026-10-16: 227 OI2026-10-21: 232 OI2026-10-23: 241 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, 2026Viewing241+9
Oct 21, 2026232+5
Oct 16, 2026227+4
Oct 15, 2026223+2
Oct 14, 20262210
Oct 13, 2026221-1
Oct 09, 20262220
Oct 08, 2026222-2
Oct 07, 20262240
Oct 06, 20262240
Oct 05, 2026224-3
Oct 02, 2026227No prior observation