OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $36.00 Put

B261120P00036000

Latest saved OI388Oct 23, 2026
Last change+158vs 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. 3881940 2026-10-02: 44 OI2026-10-05: 48 OI2026-10-06: 48 OI2026-10-07: 48 OI2026-10-08: 62 OI2026-10-09: 62 OI2026-10-13: 65 OI2026-10-14: 74 OI2026-10-15: 77 OI2026-10-16: 75 OI2026-10-21: 230 OI2026-10-23: 388 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, 2026Viewing388+158
Oct 21, 2026230+155
Oct 16, 202675-2
Oct 15, 202677+3
Oct 14, 202674+9
Oct 13, 202665+3
Oct 09, 2026620
Oct 08, 202662+14
Oct 07, 2026480
Oct 06, 2026480
Oct 05, 202648+4
Oct 02, 202644No prior observation