OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

B $35.00 Call

B261218C00035000

Latest saved OI34,407Oct 23, 2026
Last change-2vs 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. 34,40917,2040 2026-10-02: 34,254 OI2026-10-05: 34,253 OI2026-10-06: 34,253 OI2026-10-07: 34,353 OI2026-10-08: 34,380 OI2026-10-09: 34,379 OI2026-10-13: 34,378 OI2026-10-14: 34,378 OI2026-10-15: 34,402 OI2026-10-16: 34,402 OI2026-10-21: 34,409 OI2026-10-23: 34,407 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, 2026Viewing34,407-2
Oct 21, 202634,409+7
Oct 16, 202634,4020
Oct 15, 202634,402+24
Oct 14, 202634,3780
Oct 13, 202634,378-1
Oct 09, 202634,379-1
Oct 08, 202634,380+27
Oct 07, 202634,353+100
Oct 06, 202634,2530
Oct 05, 202634,253-1
Oct 02, 202634,254No prior observation