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Contract OI history

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Jan 19, 2029 EXPIRATION

BSX $40.00 Call

BSX290119C00040000

Latest saved OI127Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $40.00 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. 142710 2026-10-02: 95 OI2026-10-05: 100 OI2026-10-06: 103 OI2026-10-07: 136 OI2026-10-08: 136 OI2026-10-09: 140 OI2026-10-13: 142 OI2026-10-14: 142 OI2026-10-15: 126 OI2026-10-16: 127 OI2026-10-21: 127 OI2026-10-23: 127 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, 2026Viewing1270
Oct 21, 20261270
Oct 16, 2026127+1
Oct 15, 2026126-16
Oct 14, 20261420
Oct 13, 2026142+2
Oct 09, 2026140+4
Oct 08, 20261360
Oct 07, 2026136+33
Oct 06, 2026103+3
Oct 05, 2026100+5
Oct 02, 202695No prior observation