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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $155.00 Put

COF261218P00155000

Latest saved OI227Oct 23, 2026
Last change+6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $155.00 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. 2271130 2026-10-02: 225 OI2026-10-05: 225 OI2026-10-06: 224 OI2026-10-07: 225 OI2026-10-08: 225 OI2026-10-09: 222 OI2026-10-13: 221 OI2026-10-14: 221 OI2026-10-15: 221 OI2026-10-16: 221 OI2026-10-21: 221 OI2026-10-23: 227 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, 2026Viewing227+6
Oct 21, 20262210
Oct 16, 20262210
Oct 15, 20262210
Oct 14, 20262210
Oct 13, 2026221-1
Oct 09, 2026222-3
Oct 08, 20262250
Oct 07, 2026225+1
Oct 06, 2026224-1
Oct 05, 20262250
Oct 02, 2026225No prior observation