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Contract OI history

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Jan 21, 2028 EXPIRATION

BSX $70.00 Call

BSX280121C00070000

Latest saved OI5,718Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $70.00 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. 5,7212,8600 2026-10-02: 5,702 OI2026-10-05: 5,705 OI2026-10-06: 5,705 OI2026-10-07: 5,719 OI2026-10-08: 5,719 OI2026-10-09: 5,721 OI2026-10-13: 5,720 OI2026-10-14: 5,720 OI2026-10-15: 5,717 OI2026-10-16: 5,716 OI2026-10-21: 5,709 OI2026-10-23: 5,718 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, 2026Viewing5,718+9
Oct 21, 20265,709-7
Oct 16, 20265,716-1
Oct 15, 20265,717-3
Oct 14, 20265,7200
Oct 13, 20265,720-1
Oct 09, 20265,721+2
Oct 08, 20265,7190
Oct 07, 20265,719+14
Oct 06, 20265,7050
Oct 05, 20265,705+3
Oct 02, 20265,702No prior observation