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Contract OI history

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Mar 19, 2027 EXPIRATION

BSX $50.00 Call

BSX270319C00050000

Latest saved OI4,524Oct 23, 2026
Last change+31vs 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. 4,5242,2620 2026-10-02: 4,257 OI2026-10-05: 4,371 OI2026-10-06: 4,435 OI2026-10-07: 4,388 OI2026-10-08: 4,388 OI2026-10-09: 4,388 OI2026-10-13: 4,407 OI2026-10-14: 4,407 OI2026-10-15: 4,411 OI2026-10-16: 4,409 OI2026-10-21: 4,493 OI2026-10-23: 4,524 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, 2026Viewing4,524+31
Oct 21, 20264,493+84
Oct 16, 20264,409-2
Oct 15, 20264,411+4
Oct 14, 20264,4070
Oct 13, 20264,407+19
Oct 09, 20264,3880
Oct 08, 20264,3880
Oct 07, 20264,388-47
Oct 06, 20264,435+64
Oct 05, 20264,371+114
Oct 02, 20264,257No prior observation