OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $33.00 Put

B261120P00033000

Latest saved OI10Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $33.00 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. 1050 2026-10-02: 4 OI2026-10-05: 4 OI2026-10-06: 4 OI2026-10-07: 5 OI2026-10-08: 7 OI2026-10-09: 7 OI2026-10-13: 8 OI2026-10-14: 8 OI2026-10-15: 9 OI2026-10-16: 9 OI2026-10-21: 9 OI2026-10-23: 10 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, 2026Viewing10+1
Oct 21, 202690
Oct 16, 202690
Oct 15, 20269+1
Oct 14, 202680
Oct 13, 20268+1
Oct 09, 202670
Oct 08, 20267+2
Oct 07, 20265+1
Oct 06, 202640
Oct 05, 202640
Oct 02, 20264No prior observation