OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CB $220.00 Put

CB270115P00220000

Latest saved OI90Oct 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 $220.00 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. 121600 2026-10-02: 121 OI2026-10-05: 121 OI2026-10-06: 121 OI2026-10-07: 121 OI2026-10-08: 121 OI2026-10-09: 121 OI2026-10-13: 121 OI2026-10-14: 121 OI2026-10-15: 121 OI2026-10-16: 117 OI2026-10-21: 90 OI2026-10-23: 90 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, 2026Viewing900
Oct 21, 202690-27
Oct 16, 2026117-4
Oct 15, 20261210
Oct 14, 20261210
Oct 13, 20261210
Oct 09, 20261210
Oct 08, 20261210
Oct 07, 20261210
Oct 06, 20261210
Oct 05, 20261210
Oct 02, 2026121No prior observation