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Contract OI history

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Dec 18, 2026 EXPIRATION

BSX $35.00 Call

BSX261218C00035000

Latest saved OI91Oct 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 $35.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 91450 2026-10-02: 65 OI2026-10-05: 65 OI2026-10-06: 76 OI2026-10-07: 87 OI2026-10-08: 87 OI2026-10-09: 87 OI2026-10-13: 88 OI2026-10-14: 88 OI2026-10-15: 88 OI2026-10-16: 88 OI2026-10-21: 91 OI2026-10-23: 91 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, 2026Viewing910
Oct 21, 202691+3
Oct 16, 2026880
Oct 15, 2026880
Oct 14, 2026880
Oct 13, 202688+1
Oct 09, 2026870
Oct 08, 2026870
Oct 07, 202687+11
Oct 06, 202676+11
Oct 05, 2026650
Oct 02, 202665No prior observation