OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

CB $350.00 Put

CB261120P00350000

Latest saved OI231Oct 23, 2026
Last change+62vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CB $350.00 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. 2311150 2026-10-02: 14 OI2026-10-05: 14 OI2026-10-06: 14 OI2026-10-07: 14 OI2026-10-08: 14 OI2026-10-09: 14 OI2026-10-13: 23 OI2026-10-14: 24 OI2026-10-15: 38 OI2026-10-16: 62 OI2026-10-21: 169 OI2026-10-23: 231 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing231+62
Oct 21, 2026169+107
Oct 16, 202662+24
Oct 15, 202638+14
Oct 14, 202624+1
Oct 13, 202623+9
Oct 09, 2026140
Oct 08, 2026140
Oct 07, 2026140
Oct 06, 2026140
Oct 05, 2026140
Oct 02, 202614No prior observation