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Contract OI history

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Mar 19, 2027 EXPIRATION

COF $220.00 Put

COF270319P00220000

Latest saved OI1,380Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $220.00 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. 1,3806900 2026-10-02: 1,375 OI2026-10-05: 1,375 OI2026-10-06: 1,375 OI2026-10-07: 1,375 OI2026-10-08: 1,375 OI2026-10-09: 1,375 OI2026-10-13: 1,375 OI2026-10-14: 1,375 OI2026-10-15: 1,375 OI2026-10-16: 1,375 OI2026-10-21: 1,375 OI2026-10-23: 1,380 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, 2026Viewing1,380+5
Oct 21, 20261,3750
Oct 16, 20261,3750
Oct 15, 20261,3750
Oct 14, 20261,3750
Oct 13, 20261,3750
Oct 09, 20261,3750
Oct 08, 20261,3750
Oct 07, 20261,3750
Oct 06, 20261,3750
Oct 05, 20261,3750
Oct 02, 20261,375No prior observation