OITracker Cboe delayed data

Contract OI history

Back to BIIB

Dec 18, 2026 EXPIRATION

BIIB $280.00 Call

BIIB261218C00280000

Latest saved OI39Oct 23, 2026
Last change+20vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $280.00 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. 39190 2026-10-09: 15 OI2026-10-13: 15 OI2026-10-14: 15 OI2026-10-15: 15 OI2026-10-16: 15 OI2026-10-21: 19 OI2026-10-23: 39 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, 2026Viewing39+20
Oct 21, 202619+4
Oct 16, 2026150
Oct 15, 2026150
Oct 14, 2026150
Oct 13, 2026150
Oct 09, 202615No prior observation