OITracker Cboe delayed data

Contract OI history

Back to CPB

Dec 18, 2026 EXPIRATION

CPB $20.00 Put

CPB261218P00020000

Latest saved OI1,953Oct 23, 2026
Last change-34vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CPB $20.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,9879930 2026-10-09: 1,970 OI2026-10-13: 1,944 OI2026-10-14: 1,944 OI2026-10-15: 1,948 OI2026-10-16: 1,972 OI2026-10-21: 1,987 OI2026-10-23: 1,953 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CPB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,953-34
Oct 21, 20261,987+15
Oct 16, 20261,972+24
Oct 15, 20261,948+4
Oct 14, 20261,9440
Oct 13, 20261,944-26
Oct 09, 20261,970No prior observation