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Contract OI history

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Feb 19, 2027 EXPIRATION

BSX $50.00 Put

BSX270219P00050000

Latest saved OI646Oct 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 $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. 6503250 2026-10-02: 650 OI2026-10-05: 650 OI2026-10-06: 650 OI2026-10-07: 650 OI2026-10-08: 650 OI2026-10-09: 650 OI2026-10-13: 636 OI2026-10-14: 636 OI2026-10-15: 636 OI2026-10-16: 639 OI2026-10-21: 646 OI2026-10-23: 646 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, 2026Viewing6460
Oct 21, 2026646+7
Oct 16, 2026639+3
Oct 15, 20266360
Oct 14, 20266360
Oct 13, 2026636-14
Oct 09, 20266500
Oct 08, 20266500
Oct 07, 20266500
Oct 06, 20266500
Oct 05, 20266500
Oct 02, 2026650No prior observation