OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

B $43.00 Put

B270115P00043000

Latest saved OI311Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $43.00 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. 3151570 2026-10-02: 308 OI2026-10-05: 308 OI2026-10-06: 308 OI2026-10-07: 308 OI2026-10-08: 308 OI2026-10-09: 308 OI2026-10-13: 308 OI2026-10-14: 308 OI2026-10-15: 314 OI2026-10-16: 315 OI2026-10-21: 315 OI2026-10-23: 311 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing311-4
Oct 21, 20263150
Oct 16, 2026315+1
Oct 15, 2026314+6
Oct 14, 20263080
Oct 13, 20263080
Oct 09, 20263080
Oct 08, 20263080
Oct 07, 20263080
Oct 06, 20263080
Oct 05, 20263080
Oct 02, 2026308No prior observation