OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $39.00 Put

B261120P00039000

Latest saved OI808Oct 23, 2026
Last change+35vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $39.00 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. 8084040 2026-10-02: 532 OI2026-10-05: 554 OI2026-10-06: 554 OI2026-10-07: 574 OI2026-10-08: 584 OI2026-10-09: 579 OI2026-10-13: 578 OI2026-10-14: 595 OI2026-10-15: 682 OI2026-10-16: 716 OI2026-10-21: 773 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+35
Oct 21, 2026773+57
Oct 16, 2026716+34
Oct 15, 2026682+87
Oct 14, 2026595+17
Oct 13, 2026578-1
Oct 09, 2026579-5
Oct 08, 2026584+10
Oct 07, 2026574+20
Oct 06, 20265540
Oct 05, 2026554+22
Oct 02, 2026532No prior observation