OITracker Cboe delayed data

Contract OI history

Back to BIIB

Jan 15, 2027 EXPIRATION

BIIB $195.00 Put

BIIB270115P00195000

Latest saved OI584Oct 23, 2026
Last change+7vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $195.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5842920 2026-10-09: 575 OI2026-10-13: 576 OI2026-10-14: 576 OI2026-10-15: 576 OI2026-10-16: 576 OI2026-10-21: 577 OI2026-10-23: 584 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, 2026Viewing584+7
Oct 21, 2026577+1
Oct 16, 20265760
Oct 15, 20265760
Oct 14, 20265760
Oct 13, 2026576+1
Oct 09, 2026575No prior observation