OITracker Cboe delayed data

Contract OI history

Back to BIIB

Nov 20, 2026 EXPIRATION

BIIB $230.00 Call

BIIB261120C00230000

Latest saved OI504Oct 23, 2026
Last change+374vs 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. 5042520 2026-10-09: 120 OI2026-10-13: 129 OI2026-10-14: 129 OI2026-10-15: 129 OI2026-10-16: 134 OI2026-10-21: 130 OI2026-10-23: 504 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, 2026Viewing504+374
Oct 21, 2026130-4
Oct 16, 2026134+5
Oct 15, 20261290
Oct 14, 20261290
Oct 13, 2026129+9
Oct 09, 2026120No prior observation