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Contract OI history

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Nov 20, 2026 EXPIRATION

COF $200.00 Put

COF261120P00200000

Latest saved OI523Oct 23, 2026
Last change+44vs 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. 5392690 2026-10-02: 221 OI2026-10-05: 221 OI2026-10-06: 521 OI2026-10-07: 521 OI2026-10-08: 521 OI2026-10-09: 527 OI2026-10-13: 529 OI2026-10-14: 529 OI2026-10-15: 535 OI2026-10-16: 539 OI2026-10-21: 479 OI2026-10-23: 523 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, 2026Viewing523+44
Oct 21, 2026479-60
Oct 16, 2026539+4
Oct 15, 2026535+6
Oct 14, 20265290
Oct 13, 2026529+2
Oct 09, 2026527+6
Oct 08, 20265210
Oct 07, 20265210
Oct 06, 2026521+300
Oct 05, 20262210
Oct 02, 2026221No prior observation