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Contract OI history

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Jun 17, 2027 EXPIRATION

BSX $55.00 Call

BSX270617C00055000

Latest saved OI905Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $55.00 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. 9694840 2026-10-02: 936 OI2026-10-05: 941 OI2026-10-06: 947 OI2026-10-07: 942 OI2026-10-08: 942 OI2026-10-09: 951 OI2026-10-13: 964 OI2026-10-14: 964 OI2026-10-15: 964 OI2026-10-16: 969 OI2026-10-21: 902 OI2026-10-23: 905 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, 2026Viewing905+3
Oct 21, 2026902-67
Oct 16, 2026969+5
Oct 15, 20269640
Oct 14, 20269640
Oct 13, 2026964+13
Oct 09, 2026951+9
Oct 08, 20269420
Oct 07, 2026942-5
Oct 06, 2026947+6
Oct 05, 2026941+5
Oct 02, 2026936No prior observation