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Contract OI history

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Feb 19, 2027 EXPIRATION

BSX $45.00 Put

BSX270219P00045000

Latest saved OI2,341Oct 23, 2026
Last change+60vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $45.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,3411,1700 2026-10-02: 2,242 OI2026-10-05: 2,242 OI2026-10-06: 2,242 OI2026-10-07: 2,242 OI2026-10-08: 2,242 OI2026-10-09: 2,241 OI2026-10-13: 2,248 OI2026-10-14: 2,248 OI2026-10-15: 2,247 OI2026-10-16: 2,247 OI2026-10-21: 2,281 OI2026-10-23: 2,341 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, 2026Viewing2,341+60
Oct 21, 20262,281+34
Oct 16, 20262,2470
Oct 15, 20262,247-1
Oct 14, 20262,2480
Oct 13, 20262,248+7
Oct 09, 20262,241-1
Oct 08, 20262,2420
Oct 07, 20262,2420
Oct 06, 20262,2420
Oct 05, 20262,2420
Oct 02, 20262,242No prior observation