OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

CPB $18.00 Put

CPB270319P00018000

Latest saved OI1,024Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CPB $18.00 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. 1,0265130 2026-10-09: 1,016 OI2026-10-13: 1,020 OI2026-10-14: 1,020 OI2026-10-15: 1,020 OI2026-10-16: 1,022 OI2026-10-21: 1,026 OI2026-10-23: 1,024 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, 2026Viewing1,024-2
Oct 21, 20261,026+4
Oct 16, 20261,022+2
Oct 15, 20261,0200
Oct 14, 20261,0200
Oct 13, 20261,020+4
Oct 09, 20261,016No prior observation