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Contract OI history

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Dec 18, 2026 EXPIRATION

BIIB $230.00 Call

BIIB261218C00230000

Latest saved OI299Oct 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 $230.00 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. 2991490 2026-10-09: 265 OI2026-10-13: 277 OI2026-10-14: 277 OI2026-10-15: 292 OI2026-10-16: 295 OI2026-10-21: 299 OI2026-10-23: 299 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, 2026Viewing2990
Oct 21, 2026299+4
Oct 16, 2026295+3
Oct 15, 2026292+15
Oct 14, 20262770
Oct 13, 2026277+12
Oct 09, 2026265No prior observation