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Contract OI history

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Dec 18, 2026 EXPIRATION

BSX $47.50 Call

BSX261218C00047500

Latest saved OI2,056Oct 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 $47.50 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. 2,0561,0280 2026-10-02: 2,001 OI2026-10-05: 2,001 OI2026-10-06: 2,023 OI2026-10-07: 2,030 OI2026-10-08: 2,030 OI2026-10-09: 2,027 OI2026-10-13: 2,027 OI2026-10-14: 2,027 OI2026-10-15: 2,028 OI2026-10-16: 2,035 OI2026-10-21: 2,051 OI2026-10-23: 2,056 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, 2026Viewing2,056+5
Oct 21, 20262,051+16
Oct 16, 20262,035+7
Oct 15, 20262,028+1
Oct 14, 20262,0270
Oct 13, 20262,0270
Oct 09, 20262,027-3
Oct 08, 20262,0300
Oct 07, 20262,030+7
Oct 06, 20262,023+22
Oct 05, 20262,0010
Oct 02, 20262,001No prior observation