OITracker Cboe delayed data

Contract OI history

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Nov 06, 2026 EXPIRATION

B $40.00 Call

B261106C00040000

Latest saved OI141Oct 23, 2026
Last change+22vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $40.00 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. 141700 2026-10-02: 4 OI2026-10-05: 4 OI2026-10-06: 4 OI2026-10-07: 4 OI2026-10-08: 4 OI2026-10-09: 7 OI2026-10-13: 13 OI2026-10-14: 13 OI2026-10-15: 23 OI2026-10-16: 86 OI2026-10-21: 119 OI2026-10-23: 141 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing141+22
Oct 21, 2026119+33
Oct 16, 202686+63
Oct 15, 202623+10
Oct 14, 2026130
Oct 13, 202613+6
Oct 09, 20267+3
Oct 08, 202640
Oct 07, 202640
Oct 06, 202640
Oct 05, 202640
Oct 02, 20264No prior observation