OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BW $4.00 Put

BW270115P00004000

Latest saved OI226Oct 23, 2026
Last change+193vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BW $4.00 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. 2261130 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 60 OI2026-10-08: 60 OI2026-10-09: 24 OI2026-10-13: 27 OI2026-10-14: 27 OI2026-10-15: 33 OI2026-10-16: 33 OI2026-10-20: 33 OI2026-10-23: 226 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, 2026Viewing226+193
Oct 20, 2026330
Oct 16, 2026330
Oct 15, 202633+6
Oct 14, 2026270
Oct 13, 202627+3
Oct 09, 202624-36
Oct 08, 2026600
Oct 07, 202660+59
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation