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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $200.00 Put

COF261218P00200000

Latest saved OI1,283Oct 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 $200.00 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. 1,2836410 2026-10-02: 1,222 OI2026-10-05: 1,213 OI2026-10-06: 1,218 OI2026-10-07: 1,219 OI2026-10-08: 1,219 OI2026-10-09: 1,235 OI2026-10-13: 1,236 OI2026-10-14: 1,236 OI2026-10-15: 1,251 OI2026-10-16: 1,274 OI2026-10-21: 1,273 OI2026-10-23: 1,283 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, 2026Viewing1,283+10
Oct 21, 20261,273-1
Oct 16, 20261,274+23
Oct 15, 20261,251+15
Oct 14, 20261,2360
Oct 13, 20261,236+1
Oct 09, 20261,235+16
Oct 08, 20261,2190
Oct 07, 20261,219+1
Oct 06, 20261,218+5
Oct 05, 20261,213-9
Oct 02, 20261,222No prior observation