OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $280.00 Call

BIIB270115C00280000

Latest saved OI632Oct 23, 2026
Last change+9vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $280.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6323160 2026-10-09: 623 OI2026-10-13: 623 OI2026-10-14: 623 OI2026-10-15: 623 OI2026-10-16: 623 OI2026-10-21: 623 OI2026-10-23: 632 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BIIB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing632+9
Oct 21, 20266230
Oct 16, 20266230
Oct 15, 20266230
Oct 14, 20266230
Oct 13, 20266230
Oct 09, 2026623No prior observation