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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $140.00 Put

COF261218P00140000

Latest saved OI336Oct 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
COF $140.00 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. 3381690 2026-10-02: 338 OI2026-10-05: 338 OI2026-10-06: 338 OI2026-10-07: 338 OI2026-10-08: 338 OI2026-10-09: 337 OI2026-10-13: 337 OI2026-10-14: 337 OI2026-10-15: 337 OI2026-10-16: 337 OI2026-10-21: 337 OI2026-10-23: 336 OI Oct 02, 2026Oct 23, 2026

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

COF contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing336-1
Oct 21, 20263370
Oct 16, 20263370
Oct 15, 20263370
Oct 14, 20263370
Oct 13, 20263370
Oct 09, 2026337-1
Oct 08, 20263380
Oct 07, 20263380
Oct 06, 20263380
Oct 05, 20263380
Oct 02, 2026338No prior observation