OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BSX $120.00 Call

BSX280121C00120000

Latest saved OI805Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $120.00 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. 8074030 2026-10-02: 807 OI2026-10-05: 807 OI2026-10-06: 807 OI2026-10-07: 807 OI2026-10-08: 807 OI2026-10-09: 807 OI2026-10-13: 807 OI2026-10-14: 807 OI2026-10-15: 806 OI2026-10-16: 806 OI2026-10-21: 806 OI2026-10-23: 805 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, 2026Viewing805-1
Oct 21, 20268060
Oct 16, 20268060
Oct 15, 2026806-1
Oct 14, 20268070
Oct 13, 20268070
Oct 09, 20268070
Oct 08, 20268070
Oct 07, 20268070
Oct 06, 20268070
Oct 05, 20268070
Oct 02, 2026807No prior observation