OITracker Cboe delayed data

Contract OI history

Back to COF

Dec 18, 2026 EXPIRATION

COF $185.00 Put

COF261218P00185000

Latest saved OI305Oct 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 $185.00 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. 3051520 2026-10-02: 289 OI2026-10-05: 290 OI2026-10-06: 291 OI2026-10-07: 291 OI2026-10-08: 291 OI2026-10-09: 294 OI2026-10-13: 295 OI2026-10-14: 295 OI2026-10-15: 276 OI2026-10-16: 277 OI2026-10-21: 301 OI2026-10-23: 305 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, 2026Viewing305+4
Oct 21, 2026301+24
Oct 16, 2026277+1
Oct 15, 2026276-19
Oct 14, 20262950
Oct 13, 2026295+1
Oct 09, 2026294+3
Oct 08, 20262910
Oct 07, 20262910
Oct 06, 2026291+1
Oct 05, 2026290+1
Oct 02, 2026289No prior observation