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Contract OI history

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Oct 23, 2026 EXPIRATION

BSX $38.00 Put

BSX261023P00038000

Latest saved OI1,436Oct 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 $38.00 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. 1,4377180 2026-10-02: 1,408 OI2026-10-05: 1,407 OI2026-10-06: 1,412 OI2026-10-07: 1,411 OI2026-10-08: 1,411 OI2026-10-09: 1,437 OI2026-10-13: 1,437 OI2026-10-14: 1,437 OI2026-10-15: 1,437 OI2026-10-16: 1,437 OI2026-10-21: 1,436 OI2026-10-23: 1,436 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, 2026Viewing1,4360
Oct 21, 20261,436-1
Oct 16, 20261,4370
Oct 15, 20261,4370
Oct 14, 20261,4370
Oct 13, 20261,4370
Oct 09, 20261,437+26
Oct 08, 20261,4110
Oct 07, 20261,411-1
Oct 06, 20261,412+5
Oct 05, 20261,407-1
Oct 02, 20261,408No prior observation