OITracker Cboe delayed data

Contract OI history

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Dec 15, 2028 EXPIRATION

B $42.00 Call

B281215C00042000

Latest saved OI134Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $42.00 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. 134670 2026-10-02: 131 OI2026-10-05: 131 OI2026-10-06: 131 OI2026-10-07: 123 OI2026-10-08: 123 OI2026-10-09: 123 OI2026-10-13: 123 OI2026-10-14: 123 OI2026-10-15: 123 OI2026-10-16: 123 OI2026-10-21: 134 OI2026-10-23: 134 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, 2026Viewing1340
Oct 21, 2026134+11
Oct 16, 20261230
Oct 15, 20261230
Oct 14, 20261230
Oct 13, 20261230
Oct 09, 20261230
Oct 08, 20261230
Oct 07, 2026123-8
Oct 06, 20261310
Oct 05, 20261310
Oct 02, 2026131No prior observation