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Contract OI history

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Nov 06, 2026 EXPIRATION

BIIB $225.00 Call

BIIB261106C00225000

Latest saved OI259Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $225.00 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. 2621310 2026-10-09: 6 OI2026-10-13: 6 OI2026-10-14: 262 OI2026-10-15: 261 OI2026-10-16: 261 OI2026-10-21: 260 OI2026-10-23: 259 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, 2026Viewing259-1
Oct 21, 2026260-1
Oct 16, 20262610
Oct 15, 2026261-1
Oct 14, 2026262+256
Oct 13, 202660
Oct 09, 20266No prior observation