OITracker Cboe delayed data

Contract OI history

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Nov 13, 2026 EXPIRATION

B $41.00 Put

B261113P00041000

Latest saved OI1,427Oct 23, 2026
Last change+10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.00 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. 1,6768380 2026-10-02: 0 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 3 OI2026-10-08: 4 OI2026-10-09: 4 OI2026-10-13: 792 OI2026-10-14: 792 OI2026-10-15: 792 OI2026-10-16: 1,676 OI2026-10-21: 1,417 OI2026-10-23: 1,427 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, 2026Viewing1,427+10
Oct 21, 20261,417-259
Oct 16, 20261,676+884
Oct 15, 20267920
Oct 14, 20267920
Oct 13, 2026792+788
Oct 09, 202640
Oct 08, 20264+1
Oct 07, 20263+2
Oct 06, 202610
Oct 05, 20261+1
Oct 02, 20260No prior observation