OITracker Cboe delayed data

Contract OI history

Back to B

Dec 04, 2026 EXPIRATION

B $39.00 Put

B261204P00039000

Latest saved OI5Oct 23, 2026
Last change—vs previous saved observation
Saved market days1Oct 23, 2026 onwards
Daily open interest Hover a point for its date and OI
B $39.00 put open interest history 1 saved observations from 2026-10-23 to 2026-10-23. Exact values and changes are listed in the table below. 520 2026-10-23: 5 OI Oct 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, 2026Viewing5No prior observation