OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

CNK $40.00 Call

CNK270319C00040000

Latest saved OI45Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CNK $40.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 45220 2026-10-02: 44 OI2026-10-05: 44 OI2026-10-06: 44 OI2026-10-07: 44 OI2026-10-08: 44 OI2026-10-09: 44 OI2026-10-13: 44 OI2026-10-14: 45 OI2026-10-16: 45 OI2026-10-20: 45 OI2026-10-23: 45 OI Oct 02, 2026Oct 23, 2026

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

CNK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing450
Oct 20, 2026450
Oct 16, 2026450
Oct 14, 202645+1
Oct 13, 2026440
Oct 09, 2026440
Oct 08, 2026440
Oct 07, 2026440
Oct 06, 2026440
Oct 05, 2026440
Oct 02, 202644No prior observation