OITracker Cboe delayed data

Contract OI history

Back to BIIB

Oct 23, 2026 EXPIRATION

BIIB $220.00 Call

BIIB261023C00220000

Latest saved OI203Oct 23, 2026
Last change-5vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $220.00 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. 2201100 2026-10-09: 212 OI2026-10-13: 220 OI2026-10-14: 220 OI2026-10-15: 218 OI2026-10-16: 216 OI2026-10-21: 208 OI2026-10-23: 203 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, 2026Viewing203-5
Oct 21, 2026208-8
Oct 16, 2026216-2
Oct 15, 2026218-2
Oct 14, 20262200
Oct 13, 2026220+8
Oct 09, 2026212No prior observation