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Contract OI history

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Dec 18, 2026 EXPIRATION

COF $170.00 Put

COF261218P00170000

Latest saved OI593Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $170.00 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. 5932960 2026-10-02: 566 OI2026-10-05: 568 OI2026-10-06: 569 OI2026-10-07: 575 OI2026-10-08: 575 OI2026-10-09: 576 OI2026-10-13: 580 OI2026-10-14: 580 OI2026-10-15: 581 OI2026-10-16: 582 OI2026-10-21: 591 OI2026-10-23: 593 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, 2026Viewing593+2
Oct 21, 2026591+9
Oct 16, 2026582+1
Oct 15, 2026581+1
Oct 14, 20265800
Oct 13, 2026580+4
Oct 09, 2026576+1
Oct 08, 20265750
Oct 07, 2026575+6
Oct 06, 2026569+1
Oct 05, 2026568+2
Oct 02, 2026566No prior observation