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Contract OI history

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Jun 17, 2027 EXPIRATION

BIIB $280.00 Call

BIIB270617C00280000

Latest saved OI374Oct 23, 2026
Last change+333vs 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. 3741870 2026-10-09: 40 OI2026-10-13: 40 OI2026-10-14: 40 OI2026-10-15: 40 OI2026-10-16: 40 OI2026-10-21: 41 OI2026-10-23: 374 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, 2026Viewing374+333
Oct 21, 202641+1
Oct 16, 2026400
Oct 15, 2026400
Oct 14, 2026400
Oct 13, 2026400
Oct 09, 202640No prior observation