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Contract OI history

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Sep 17, 2027 EXPIRATION

BSX $50.00 Call

BSX270917C00050000

Latest saved OI870Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $50.00 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. 9534760 2026-10-02: 372 OI2026-10-05: 372 OI2026-10-06: 383 OI2026-10-07: 832 OI2026-10-08: 832 OI2026-10-09: 953 OI2026-10-13: 952 OI2026-10-14: 952 OI2026-10-15: 953 OI2026-10-16: 953 OI2026-10-21: 866 OI2026-10-23: 870 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, 2026Viewing870+4
Oct 21, 2026866-87
Oct 16, 20269530
Oct 15, 2026953+1
Oct 14, 20269520
Oct 13, 2026952-1
Oct 09, 2026953+121
Oct 08, 20268320
Oct 07, 2026832+449
Oct 06, 2026383+11
Oct 05, 20263720
Oct 02, 2026372No prior observation