OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $25.00 Put

B281215P00025000

Latest saved OI733Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $25.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7433710 2026-10-02: 124 OI2026-10-05: 124 OI2026-10-06: 124 OI2026-10-07: 124 OI2026-10-08: 743 OI2026-10-09: 743 OI2026-10-13: 734 OI2026-10-14: 734 OI2026-10-15: 734 OI2026-10-16: 734 OI2026-10-21: 734 OI2026-10-23: 733 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, 2026Viewing733-1
Oct 21, 20267340
Oct 16, 20267340
Oct 15, 20267340
Oct 14, 20267340
Oct 13, 2026734-9
Oct 09, 20267430
Oct 08, 2026743+619
Oct 07, 20261240
Oct 06, 20261240
Oct 05, 20261240
Oct 02, 2026124No prior observation