OITracker Cboe delayed data

Contract OI history

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Dec 15, 2028 EXPIRATION

BX $100.00 Put

BX281215P00100000

Latest saved OI3,135Oct 23, 2026
Last change+363vs 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. 3,1351,5670 2026-10-02: 2,770 OI2026-10-05: 2,770 OI2026-10-06: 2,771 OI2026-10-07: 2,771 OI2026-10-08: 2,771 OI2026-10-09: 2,771 OI2026-10-13: 2,771 OI2026-10-14: 2,771 OI2026-10-15: 2,771 OI2026-10-16: 2,771 OI2026-10-21: 2,772 OI2026-10-23: 3,135 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, 2026Viewing3,135+363
Oct 21, 20262,772+1
Oct 16, 20262,7710
Oct 15, 20262,7710
Oct 14, 20262,7710
Oct 13, 20262,7710
Oct 09, 20262,7710
Oct 08, 20262,7710
Oct 07, 20262,7710
Oct 06, 20262,771+1
Oct 05, 20262,7700
Oct 02, 20262,770No prior observation