OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

BW $9.00 Put

BW261120P00009000

Latest saved OI317Oct 23, 2026
Last change-49vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BW $9.00 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. 3661830 2026-10-02: 365 OI2026-10-05: 365 OI2026-10-06: 364 OI2026-10-07: 364 OI2026-10-08: 364 OI2026-10-09: 364 OI2026-10-13: 364 OI2026-10-14: 364 OI2026-10-15: 366 OI2026-10-16: 366 OI2026-10-20: 366 OI2026-10-23: 317 OI Oct 02, 2026Oct 23, 2026

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

BW contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing317-49
Oct 20, 20263660
Oct 16, 20263660
Oct 15, 2026366+2
Oct 14, 20263640
Oct 13, 20263640
Oct 09, 20263640
Oct 08, 20263640
Oct 07, 20263640
Oct 06, 2026364-1
Oct 05, 20263650
Oct 02, 2026365No prior observation