OITracker Cboe delayed data

Contract OI history

Back to B

Oct 23, 2026 EXPIRATION

B $40.00 Call

B261023C00040000

Latest saved OI463Oct 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 $40.00 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. 4672330 2026-10-02: 206 OI2026-10-05: 209 OI2026-10-06: 209 OI2026-10-07: 166 OI2026-10-08: 344 OI2026-10-09: 344 OI2026-10-13: 322 OI2026-10-14: 322 OI2026-10-15: 351 OI2026-10-16: 400 OI2026-10-21: 467 OI2026-10-23: 463 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, 2026Viewing463-4
Oct 21, 2026467+67
Oct 16, 2026400+49
Oct 15, 2026351+29
Oct 14, 20263220
Oct 13, 2026322-22
Oct 09, 20263440
Oct 08, 2026344+178
Oct 07, 2026166-43
Oct 06, 20262090
Oct 05, 2026209+3
Oct 02, 2026206No prior observation