OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

B $36.00 Put

B261030P00036000

Latest saved OI808Oct 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 $36.00 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. 1,1185590 2026-10-02: 6 OI2026-10-05: 7 OI2026-10-06: 7 OI2026-10-07: 7 OI2026-10-08: 1,118 OI2026-10-09: 1,118 OI2026-10-13: 801 OI2026-10-14: 806 OI2026-10-15: 815 OI2026-10-16: 815 OI2026-10-21: 809 OI2026-10-23: 808 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, 2026Viewing808-1
Oct 21, 2026809-6
Oct 16, 20268150
Oct 15, 2026815+9
Oct 14, 2026806+5
Oct 13, 2026801-317
Oct 09, 20261,1180
Oct 08, 20261,118+1,111
Oct 07, 202670
Oct 06, 202670
Oct 05, 20267+1
Oct 02, 20266No prior observation