OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CB $320.00 Call

CB270115C00320000

Latest saved OI111Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CB $320.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 138690 2026-10-02: 138 OI2026-10-05: 138 OI2026-10-06: 138 OI2026-10-07: 138 OI2026-10-08: 138 OI2026-10-09: 138 OI2026-10-13: 138 OI2026-10-14: 138 OI2026-10-15: 138 OI2026-10-16: 138 OI2026-10-21: 111 OI2026-10-23: 111 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, 2026Viewing1110
Oct 21, 2026111-27
Oct 16, 20261380
Oct 15, 20261380
Oct 14, 20261380
Oct 13, 20261380
Oct 09, 20261380
Oct 08, 20261380
Oct 07, 20261380
Oct 06, 20261380
Oct 05, 20261380
Oct 02, 2026138No prior observation