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Contract OI history

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Mar 19, 2027 EXPIRATION

BIIB $280.00 Call

BIIB270319C00280000

Latest saved OI37Oct 23, 2026
Last change+3vs 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. 37180 2026-10-09: 26 OI2026-10-13: 28 OI2026-10-14: 28 OI2026-10-15: 28 OI2026-10-16: 32 OI2026-10-21: 34 OI2026-10-23: 37 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, 2026Viewing37+3
Oct 21, 202634+2
Oct 16, 202632+4
Oct 15, 2026280
Oct 14, 2026280
Oct 13, 202628+2
Oct 09, 202626No prior observation