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Contract OI history

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Oct 23, 2026 EXPIRATION

BIIB $240.00 Call

BIIB261023C00240000

Latest saved OI162Oct 23, 2026
Last change-132vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $240.00 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. 2941470 2026-10-09: 23 OI2026-10-13: 26 OI2026-10-14: 29 OI2026-10-15: 267 OI2026-10-16: 278 OI2026-10-21: 294 OI2026-10-23: 162 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, 2026Viewing162-132
Oct 21, 2026294+16
Oct 16, 2026278+11
Oct 15, 2026267+238
Oct 14, 202629+3
Oct 13, 202626+3
Oct 09, 202623No prior observation