OITracker Cboe delayed data

Contract OI history

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Jan 19, 2029 EXPIRATION

B $40.00 Call

B290119C00040000

Latest saved OI37Oct 23, 2026
Last change+6vs 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. 37180 2026-10-02: 28 OI2026-10-05: 28 OI2026-10-06: 28 OI2026-10-07: 28 OI2026-10-08: 28 OI2026-10-09: 28 OI2026-10-13: 29 OI2026-10-14: 29 OI2026-10-15: 31 OI2026-10-16: 31 OI2026-10-21: 31 OI2026-10-23: 37 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, 2026Viewing37+6
Oct 21, 2026310
Oct 16, 2026310
Oct 15, 202631+2
Oct 14, 2026290
Oct 13, 202629+1
Oct 09, 2026280
Oct 08, 2026280
Oct 07, 2026280
Oct 06, 2026280
Oct 05, 2026280
Oct 02, 202628No prior observation