OITracker Cboe delayed data

Contract OI history

Back to CB

Nov 20, 2026 EXPIRATION

CB $340.00 Put

CB261120P00340000

Latest saved OI158Oct 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
CB $340.00 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. 160800 2026-10-02: 99 OI2026-10-05: 99 OI2026-10-06: 99 OI2026-10-07: 101 OI2026-10-08: 101 OI2026-10-09: 102 OI2026-10-13: 139 OI2026-10-14: 139 OI2026-10-15: 141 OI2026-10-16: 142 OI2026-10-21: 160 OI2026-10-23: 158 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, 2026Viewing158-2
Oct 21, 2026160+18
Oct 16, 2026142+1
Oct 15, 2026141+2
Oct 14, 20261390
Oct 13, 2026139+37
Oct 09, 2026102+1
Oct 08, 20261010
Oct 07, 2026101+2
Oct 06, 2026990
Oct 05, 2026990
Oct 02, 202699No prior observation