OITracker Cboe delayed data

Contract OI history

Back to COF

Mar 19, 2027 EXPIRATION

COF $155.00 Put

COF270319P00155000

Latest saved OI206Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $155.00 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. 2061030 2026-10-02: 126 OI2026-10-05: 126 OI2026-10-06: 134 OI2026-10-07: 133 OI2026-10-08: 133 OI2026-10-09: 171 OI2026-10-13: 189 OI2026-10-14: 189 OI2026-10-15: 189 OI2026-10-16: 189 OI2026-10-21: 202 OI2026-10-23: 206 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, 2026Viewing206+4
Oct 21, 2026202+13
Oct 16, 20261890
Oct 15, 20261890
Oct 14, 20261890
Oct 13, 2026189+18
Oct 09, 2026171+38
Oct 08, 20261330
Oct 07, 2026133-1
Oct 06, 2026134+8
Oct 05, 20261260
Oct 02, 2026126No prior observation