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Contract OI history

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Oct 23, 2026 EXPIRATION

BSX $41.50 Put

BSX261023P00041500

Latest saved OI472Oct 23, 2026
Last change-5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $41.50 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. 4772380 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 10 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 38 OI2026-10-13: 111 OI2026-10-14: 111 OI2026-10-15: 112 OI2026-10-16: 131 OI2026-10-21: 477 OI2026-10-23: 472 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, 2026Viewing472-5
Oct 21, 2026477+346
Oct 16, 2026131+19
Oct 15, 2026112+1
Oct 14, 20261110
Oct 13, 2026111+73
Oct 09, 202638+28
Oct 08, 2026100
Oct 07, 2026100
Oct 06, 202610+10
Oct 05, 202600
Oct 02, 20260No prior observation