OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

B $39.50 Call

B261023C00039500

Latest saved OI69Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $39.50 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. 69340 2026-10-02: 0 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 1 OI2026-10-08: 11 OI2026-10-09: 15 OI2026-10-13: 15 OI2026-10-14: 15 OI2026-10-15: 18 OI2026-10-16: 36 OI2026-10-21: 60 OI2026-10-23: 69 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, 2026Viewing69+9
Oct 21, 202660+24
Oct 16, 202636+18
Oct 15, 202618+3
Oct 14, 2026150
Oct 13, 2026150
Oct 09, 202615+4
Oct 08, 202611+10
Oct 07, 202610
Oct 06, 202610
Oct 05, 20261+1
Oct 02, 20260No prior observation