OITracker Cboe delayed data

Contract OI history

Back to BSX

Jun 17, 2027 EXPIRATION

BSX $45.00 Put

BSX270617P00045000

Latest saved OI4,242Oct 23, 2026
Last change+5vs 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. 4,2502,1250 2026-10-02: 4,031 OI2026-10-05: 4,031 OI2026-10-06: 4,025 OI2026-10-07: 4,250 OI2026-10-08: 4,250 OI2026-10-09: 4,247 OI2026-10-13: 4,248 OI2026-10-14: 4,248 OI2026-10-15: 4,249 OI2026-10-16: 4,249 OI2026-10-21: 4,237 OI2026-10-23: 4,242 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, 2026Viewing4,242+5
Oct 21, 20264,237-12
Oct 16, 20264,2490
Oct 15, 20264,249+1
Oct 14, 20264,2480
Oct 13, 20264,248+1
Oct 09, 20264,247-3
Oct 08, 20264,2500
Oct 07, 20264,250+225
Oct 06, 20264,025-6
Oct 05, 20264,0310
Oct 02, 20264,031No prior observation