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Contract OI history

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May 21, 2027 EXPIRATION

BSX $45.00 Call

BSX270521C00045000

Latest saved OI660Oct 23, 2026
Last change+13vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $45.00 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. 6603300 2026-10-02: 545 OI2026-10-05: 546 OI2026-10-06: 548 OI2026-10-07: 552 OI2026-10-08: 552 OI2026-10-09: 552 OI2026-10-13: 638 OI2026-10-14: 638 OI2026-10-15: 642 OI2026-10-16: 642 OI2026-10-21: 647 OI2026-10-23: 660 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, 2026Viewing660+13
Oct 21, 2026647+5
Oct 16, 20266420
Oct 15, 2026642+4
Oct 14, 20266380
Oct 13, 2026638+86
Oct 09, 20265520
Oct 08, 20265520
Oct 07, 2026552+4
Oct 06, 2026548+2
Oct 05, 2026546+1
Oct 02, 2026545No prior observation