OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

B $65.00 Call

B270319C00065000

Latest saved OI645Oct 23, 2026
Last change+209vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $65.00 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. 6453220 2026-10-02: 376 OI2026-10-05: 405 OI2026-10-06: 405 OI2026-10-07: 405 OI2026-10-08: 405 OI2026-10-09: 405 OI2026-10-13: 405 OI2026-10-14: 437 OI2026-10-15: 437 OI2026-10-16: 436 OI2026-10-21: 436 OI2026-10-23: 645 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, 2026Viewing645+209
Oct 21, 20264360
Oct 16, 2026436-1
Oct 15, 20264370
Oct 14, 2026437+32
Oct 13, 20264050
Oct 09, 20264050
Oct 08, 20264050
Oct 07, 20264050
Oct 06, 20264050
Oct 05, 2026405+29
Oct 02, 2026376No prior observation