OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BSX $70.00 Call

BSX270115C00070000

Latest saved OI4,171Oct 23, 2026
Last change-70vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $70.00 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. 4,3212,1600 2026-10-02: 4,321 OI2026-10-05: 4,321 OI2026-10-06: 4,312 OI2026-10-07: 4,315 OI2026-10-08: 4,315 OI2026-10-09: 4,240 OI2026-10-13: 4,239 OI2026-10-14: 4,239 OI2026-10-15: 4,239 OI2026-10-16: 4,240 OI2026-10-21: 4,241 OI2026-10-23: 4,171 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, 2026Viewing4,171-70
Oct 21, 20264,241+1
Oct 16, 20264,240+1
Oct 15, 20264,2390
Oct 14, 20264,2390
Oct 13, 20264,239-1
Oct 09, 20264,240-75
Oct 08, 20264,3150
Oct 07, 20264,315+3
Oct 06, 20264,312-9
Oct 05, 20264,3210
Oct 02, 20264,321No prior observation