OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

BSX $30.00 Put

BSX261120P00030000

Latest saved OI176Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $30.00 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. 176880 2026-10-02: 133 OI2026-10-05: 137 OI2026-10-06: 138 OI2026-10-07: 138 OI2026-10-08: 138 OI2026-10-09: 132 OI2026-10-13: 132 OI2026-10-14: 132 OI2026-10-15: 176 OI2026-10-16: 176 OI2026-10-21: 176 OI2026-10-23: 176 OI Oct 02, 2026Oct 23, 2026

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

BSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1760
Oct 21, 20261760
Oct 16, 20261760
Oct 15, 2026176+44
Oct 14, 20261320
Oct 13, 20261320
Oct 09, 2026132-6
Oct 08, 20261380
Oct 07, 20261380
Oct 06, 2026138+1
Oct 05, 2026137+4
Oct 02, 2026133No prior observation