OITracker Cboe delayed data

Contract OI history

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Sep 17, 2027 EXPIRATION

BX $100.00 Put

BX270917P00100000

Latest saved OI1,544Oct 23, 2026
Last change+29vs 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. 1,5447720 2026-10-02: 1,365 OI2026-10-05: 1,365 OI2026-10-06: 1,365 OI2026-10-07: 1,415 OI2026-10-08: 1,415 OI2026-10-09: 1,415 OI2026-10-13: 1,417 OI2026-10-14: 1,417 OI2026-10-15: 1,479 OI2026-10-16: 1,479 OI2026-10-21: 1,515 OI2026-10-23: 1,544 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, 2026Viewing1,544+29
Oct 21, 20261,515+36
Oct 16, 20261,4790
Oct 15, 20261,479+62
Oct 14, 20261,4170
Oct 13, 20261,417+2
Oct 09, 20261,4150
Oct 08, 20261,4150
Oct 07, 20261,415+50
Oct 06, 20261,3650
Oct 05, 20261,3650
Oct 02, 20261,365No prior observation