OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BX $100.00 Put

BX280121P00100000

Latest saved OI3,708Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BX $100.00 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. 3,7081,8540 2026-10-02: 2,868 OI2026-10-05: 2,870 OI2026-10-06: 2,981 OI2026-10-07: 3,056 OI2026-10-08: 3,060 OI2026-10-09: 3,059 OI2026-10-13: 3,067 OI2026-10-14: 3,342 OI2026-10-15: 3,343 OI2026-10-16: 3,353 OI2026-10-21: 3,703 OI2026-10-23: 3,708 OI Oct 02, 2026Oct 23, 2026

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

BX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,708+5
Oct 21, 20263,703+350
Oct 16, 20263,353+10
Oct 15, 20263,343+1
Oct 14, 20263,342+275
Oct 13, 20263,067+8
Oct 09, 20263,059-1
Oct 08, 20263,060+4
Oct 07, 20263,056+75
Oct 06, 20262,981+111
Oct 05, 20262,870+2
Oct 02, 20262,868No prior observation