OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BSX $47.50 Put

BSX270115P00047500

Latest saved OI1,401Oct 23, 2026
Last change+40vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $47.50 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. 1,4017000 2026-10-02: 879 OI2026-10-05: 879 OI2026-10-06: 880 OI2026-10-07: 880 OI2026-10-08: 880 OI2026-10-09: 880 OI2026-10-13: 1,332 OI2026-10-14: 1,332 OI2026-10-15: 1,333 OI2026-10-16: 1,333 OI2026-10-21: 1,361 OI2026-10-23: 1,401 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, 2026Viewing1,401+40
Oct 21, 20261,361+28
Oct 16, 20261,3330
Oct 15, 20261,333+1
Oct 14, 20261,3320
Oct 13, 20261,332+452
Oct 09, 20268800
Oct 08, 20268800
Oct 07, 20268800
Oct 06, 2026880+1
Oct 05, 20268790
Oct 02, 2026879No prior observation