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Contract OI history

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Mar 19, 2027 EXPIRATION

COF $165.00 Put

COF270319P00165000

Latest saved OI1,140Oct 23, 2026
Last change+13vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $165.00 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. 1,1405700 2026-10-02: 1,121 OI2026-10-05: 1,121 OI2026-10-06: 1,121 OI2026-10-07: 1,121 OI2026-10-08: 1,121 OI2026-10-09: 1,121 OI2026-10-13: 1,127 OI2026-10-14: 1,127 OI2026-10-15: 1,127 OI2026-10-16: 1,127 OI2026-10-21: 1,127 OI2026-10-23: 1,140 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, 2026Viewing1,140+13
Oct 21, 20261,1270
Oct 16, 20261,1270
Oct 15, 20261,1270
Oct 14, 20261,1270
Oct 13, 20261,127+6
Oct 09, 20261,1210
Oct 08, 20261,1210
Oct 07, 20261,1210
Oct 06, 20261,1210
Oct 05, 20261,1210
Oct 02, 20261,121No prior observation