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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $175.00 Put

COF261218P00175000

Latest saved OI1,285Oct 23, 2026
Last change-25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $175.00 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. 1,3106550 2026-10-02: 868 OI2026-10-05: 872 OI2026-10-06: 873 OI2026-10-07: 874 OI2026-10-08: 874 OI2026-10-09: 882 OI2026-10-13: 882 OI2026-10-14: 882 OI2026-10-15: 874 OI2026-10-16: 874 OI2026-10-21: 1,310 OI2026-10-23: 1,285 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, 2026Viewing1,285-25
Oct 21, 20261,310+436
Oct 16, 20268740
Oct 15, 2026874-8
Oct 14, 20268820
Oct 13, 20268820
Oct 09, 2026882+8
Oct 08, 20268740
Oct 07, 2026874+1
Oct 06, 2026873+1
Oct 05, 2026872+4
Oct 02, 2026868No prior observation