OITracker Cboe delayed data

Contract OI history

Back to B

Mar 19, 2027 EXPIRATION

B $25.00 Call

B270319C00025000

Latest saved OI114Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $25.00 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. 114570 2026-10-02: 80 OI2026-10-05: 80 OI2026-10-06: 80 OI2026-10-07: 80 OI2026-10-08: 82 OI2026-10-09: 82 OI2026-10-13: 100 OI2026-10-14: 100 OI2026-10-15: 100 OI2026-10-16: 100 OI2026-10-21: 99 OI2026-10-23: 114 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, 2026Viewing114+15
Oct 21, 202699-1
Oct 16, 20261000
Oct 15, 20261000
Oct 14, 20261000
Oct 13, 2026100+18
Oct 09, 2026820
Oct 08, 202682+2
Oct 07, 2026800
Oct 06, 2026800
Oct 05, 2026800
Oct 02, 202680No prior observation