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Contract OI history

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Sep 17, 2027 EXPIRATION

BSX $45.00 Put

BSX270917P00045000

Latest saved OI1,542Oct 23, 2026
Last change+94vs 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. 1,5427710 2026-10-02: 806 OI2026-10-05: 1,249 OI2026-10-06: 1,341 OI2026-10-07: 1,343 OI2026-10-08: 1,343 OI2026-10-09: 1,402 OI2026-10-13: 1,402 OI2026-10-14: 1,402 OI2026-10-15: 1,415 OI2026-10-16: 1,415 OI2026-10-21: 1,448 OI2026-10-23: 1,542 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, 2026Viewing1,542+94
Oct 21, 20261,448+33
Oct 16, 20261,4150
Oct 15, 20261,415+13
Oct 14, 20261,4020
Oct 13, 20261,4020
Oct 09, 20261,402+59
Oct 08, 20261,3430
Oct 07, 20261,343+2
Oct 06, 20261,341+92
Oct 05, 20261,249+443
Oct 02, 2026806No prior observation