OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $210.00 Call

BIIB270115C00210000

Latest saved OI815Oct 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 $210.00 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. 8154070 2026-10-09: 685 OI2026-10-13: 685 OI2026-10-14: 685 OI2026-10-15: 685 OI2026-10-16: 685 OI2026-10-21: 815 OI2026-10-23: 815 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, 2026Viewing8150
Oct 21, 2026815+130
Oct 16, 20266850
Oct 15, 20266850
Oct 14, 20266850
Oct 13, 20266850
Oct 09, 2026685No prior observation