OITracker Cboe delayed data

Contract OI history

Back to COF

Nov 20, 2026 EXPIRATION

COF $180.00 Put

COF261120P00180000

Latest saved OI495Oct 23, 2026
Last change+210vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
COF $180.00 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. 4952470 2026-10-02: 109 OI2026-10-05: 122 OI2026-10-06: 153 OI2026-10-07: 180 OI2026-10-08: 180 OI2026-10-09: 222 OI2026-10-13: 221 OI2026-10-14: 221 OI2026-10-15: 255 OI2026-10-16: 265 OI2026-10-21: 285 OI2026-10-23: 495 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, 2026Viewing495+210
Oct 21, 2026285+20
Oct 16, 2026265+10
Oct 15, 2026255+34
Oct 14, 20262210
Oct 13, 2026221-1
Oct 09, 2026222+42
Oct 08, 20261800
Oct 07, 2026180+27
Oct 06, 2026153+31
Oct 05, 2026122+13
Oct 02, 2026109No prior observation