OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CB $340.00 Put

CB270115P00340000

Latest saved OI744Oct 23, 2026
Last change+10vs 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. 7443720 2026-10-02: 685 OI2026-10-05: 685 OI2026-10-06: 685 OI2026-10-07: 711 OI2026-10-08: 713 OI2026-10-09: 711 OI2026-10-13: 711 OI2026-10-14: 711 OI2026-10-15: 711 OI2026-10-16: 733 OI2026-10-21: 734 OI2026-10-23: 744 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, 2026Viewing744+10
Oct 21, 2026734+1
Oct 16, 2026733+22
Oct 15, 20267110
Oct 14, 20267110
Oct 13, 20267110
Oct 09, 2026711-2
Oct 08, 2026713+2
Oct 07, 2026711+26
Oct 06, 20266850
Oct 05, 20266850
Oct 02, 2026685No prior observation