OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $50.00 Call

B261120C00050000

Latest saved OI769Oct 23, 2026
Last change-25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $50.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7983990 2026-10-02: 422 OI2026-10-05: 431 OI2026-10-06: 431 OI2026-10-07: 603 OI2026-10-08: 600 OI2026-10-09: 598 OI2026-10-13: 745 OI2026-10-14: 745 OI2026-10-15: 741 OI2026-10-16: 798 OI2026-10-21: 794 OI2026-10-23: 769 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, 2026Viewing769-25
Oct 21, 2026794-4
Oct 16, 2026798+57
Oct 15, 2026741-4
Oct 14, 20267450
Oct 13, 2026745+147
Oct 09, 2026598-2
Oct 08, 2026600-3
Oct 07, 2026603+172
Oct 06, 20264310
Oct 05, 2026431+9
Oct 02, 2026422No prior observation