OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

CB $370.00 Call

CB280121C00370000

Latest saved OI351Oct 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 $370.00 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. 3511750 2026-10-02: 339 OI2026-10-05: 339 OI2026-10-06: 339 OI2026-10-07: 339 OI2026-10-08: 339 OI2026-10-09: 339 OI2026-10-13: 350 OI2026-10-14: 351 OI2026-10-15: 351 OI2026-10-16: 351 OI2026-10-21: 351 OI2026-10-23: 351 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, 2026Viewing3510
Oct 21, 20263510
Oct 16, 20263510
Oct 15, 20263510
Oct 14, 2026351+1
Oct 13, 2026350+11
Oct 09, 20263390
Oct 08, 20263390
Oct 07, 20263390
Oct 06, 20263390
Oct 05, 20263390
Oct 02, 2026339No prior observation