OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CB $300.00 Put

CB270115P00300000

Latest saved OI588Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CB $300.00 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. 5922960 2026-10-02: 592 OI2026-10-05: 592 OI2026-10-06: 592 OI2026-10-07: 592 OI2026-10-08: 591 OI2026-10-09: 591 OI2026-10-13: 591 OI2026-10-14: 591 OI2026-10-15: 591 OI2026-10-16: 591 OI2026-10-21: 589 OI2026-10-23: 588 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, 2026Viewing588-1
Oct 21, 2026589-2
Oct 16, 20265910
Oct 15, 20265910
Oct 14, 20265910
Oct 13, 20265910
Oct 09, 20265910
Oct 08, 2026591-1
Oct 07, 20265920
Oct 06, 20265920
Oct 05, 20265920
Oct 02, 2026592No prior observation