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Contract OI history

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Dec 18, 2026 EXPIRATION

CPB $21.00 Put

CPB261218P00021000

Latest saved OI1,013Oct 23, 2026
Last change+8vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CPB $21.00 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. 1,0135060 2026-10-09: 995 OI2026-10-13: 998 OI2026-10-14: 998 OI2026-10-15: 999 OI2026-10-16: 1,006 OI2026-10-21: 1,005 OI2026-10-23: 1,013 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, 2026Viewing1,013+8
Oct 21, 20261,005-1
Oct 16, 20261,006+7
Oct 15, 2026999+1
Oct 14, 20269980
Oct 13, 2026998+3
Oct 09, 2026995No prior observation