OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

B $27.00 Call

B270115C00027000

Latest saved OI3,832Oct 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 $27.00 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. 3,8401,9200 2026-10-02: 3,840 OI2026-10-05: 3,840 OI2026-10-06: 3,840 OI2026-10-07: 3,840 OI2026-10-08: 3,835 OI2026-10-09: 3,835 OI2026-10-13: 3,835 OI2026-10-14: 3,833 OI2026-10-15: 3,832 OI2026-10-16: 3,832 OI2026-10-21: 3,832 OI2026-10-23: 3,832 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, 2026Viewing3,8320
Oct 21, 20263,8320
Oct 16, 20263,8320
Oct 15, 20263,832-1
Oct 14, 20263,833-2
Oct 13, 20263,8350
Oct 09, 20263,8350
Oct 08, 20263,835-5
Oct 07, 20263,8400
Oct 06, 20263,8400
Oct 05, 20263,8400
Oct 02, 20263,840No prior observation