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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $180.00 Put

COF261218P00180000

Latest saved OI1,116Oct 23, 2026
Last change+21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $180.00 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. 1,1165580 2026-10-02: 671 OI2026-10-05: 675 OI2026-10-06: 680 OI2026-10-07: 681 OI2026-10-08: 681 OI2026-10-09: 687 OI2026-10-13: 701 OI2026-10-14: 701 OI2026-10-15: 712 OI2026-10-16: 713 OI2026-10-21: 1,095 OI2026-10-23: 1,116 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, 2026Viewing1,116+21
Oct 21, 20261,095+382
Oct 16, 2026713+1
Oct 15, 2026712+11
Oct 14, 20267010
Oct 13, 2026701+14
Oct 09, 2026687+6
Oct 08, 20266810
Oct 07, 2026681+1
Oct 06, 2026680+5
Oct 05, 2026675+4
Oct 02, 2026671No prior observation