OITracker Cboe delayed data

Contract OI history

Back to BIIB

Nov 20, 2026 EXPIRATION

BIIB $250.00 Call

BIIB261120C00250000

Latest saved OI136Oct 23, 2026
Last change+12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $250.00 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. 136680 2026-10-09: 82 OI2026-10-13: 104 OI2026-10-14: 105 OI2026-10-15: 115 OI2026-10-16: 117 OI2026-10-21: 124 OI2026-10-23: 136 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, 2026Viewing136+12
Oct 21, 2026124+7
Oct 16, 2026117+2
Oct 15, 2026115+10
Oct 14, 2026105+1
Oct 13, 2026104+22
Oct 09, 202682No prior observation