OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $155.00 Put

BIIB270115P00155000

Latest saved OI190Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $155.00 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. 190950 2026-10-09: 190 OI2026-10-13: 190 OI2026-10-14: 190 OI2026-10-15: 190 OI2026-10-16: 190 OI2026-10-21: 190 OI2026-10-23: 190 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, 2026Viewing1900
Oct 21, 20261900
Oct 16, 20261900
Oct 15, 20261900
Oct 14, 20261900
Oct 13, 20261900
Oct 09, 2026190No prior observation