OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $35.00 Call

B261120C00035000

Latest saved OI25Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $35.00 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. 25120 2026-10-02: 8 OI2026-10-05: 8 OI2026-10-06: 8 OI2026-10-07: 8 OI2026-10-08: 18 OI2026-10-09: 18 OI2026-10-13: 18 OI2026-10-14: 18 OI2026-10-15: 18 OI2026-10-16: 18 OI2026-10-21: 21 OI2026-10-23: 25 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, 2026Viewing25+4
Oct 21, 202621+3
Oct 16, 2026180
Oct 15, 2026180
Oct 14, 2026180
Oct 13, 2026180
Oct 09, 2026180
Oct 08, 202618+10
Oct 07, 202680
Oct 06, 202680
Oct 05, 202680
Oct 02, 20268No prior observation