OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BSX $50.00 Put

BSX270115P00050000

Latest saved OI5,790Oct 23, 2026
Last change-16vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $50.00 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. 7,7503,8750 2026-10-02: 7,750 OI2026-10-05: 7,750 OI2026-10-06: 5,872 OI2026-10-07: 5,873 OI2026-10-08: 5,873 OI2026-10-09: 5,873 OI2026-10-13: 5,807 OI2026-10-14: 5,807 OI2026-10-15: 5,810 OI2026-10-16: 5,805 OI2026-10-21: 5,806 OI2026-10-23: 5,790 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, 2026Viewing5,790-16
Oct 21, 20265,806+1
Oct 16, 20265,805-5
Oct 15, 20265,810+3
Oct 14, 20265,8070
Oct 13, 20265,807-66
Oct 09, 20265,8730
Oct 08, 20265,8730
Oct 07, 20265,873+1
Oct 06, 20265,872-1,878
Oct 05, 20267,7500
Oct 02, 20267,750No prior observation