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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $210.00 Put

COF261218P00210000

Latest saved OI979Oct 23, 2026
Last change+10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $210.00 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. 9794890 2026-10-02: 972 OI2026-10-05: 972 OI2026-10-06: 968 OI2026-10-07: 968 OI2026-10-08: 968 OI2026-10-09: 968 OI2026-10-13: 968 OI2026-10-14: 968 OI2026-10-15: 968 OI2026-10-16: 968 OI2026-10-21: 969 OI2026-10-23: 979 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, 2026Viewing979+10
Oct 21, 2026969+1
Oct 16, 20269680
Oct 15, 20269680
Oct 14, 20269680
Oct 13, 20269680
Oct 09, 20269680
Oct 08, 20269680
Oct 07, 20269680
Oct 06, 2026968-4
Oct 05, 20269720
Oct 02, 2026972No prior observation