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Contract OI history

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Dec 18, 2026 EXPIRATION

BIIB $200.00 Call

BIIB261218C00200000

Latest saved OI726Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $200.00 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. 7283640 2026-10-09: 728 OI2026-10-13: 726 OI2026-10-14: 726 OI2026-10-15: 726 OI2026-10-16: 726 OI2026-10-21: 726 OI2026-10-23: 726 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, 2026Viewing7260
Oct 21, 20267260
Oct 16, 20267260
Oct 15, 20267260
Oct 14, 20267260
Oct 13, 2026726-2
Oct 09, 2026728No prior observation