OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $300.00 Call

BIIB270115C00300000

Latest saved OI800Oct 23, 2026
Last change+13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $300.00 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. 8004000 2026-10-09: 74 OI2026-10-13: 74 OI2026-10-14: 411 OI2026-10-15: 592 OI2026-10-16: 646 OI2026-10-21: 787 OI2026-10-23: 800 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, 2026Viewing800+13
Oct 21, 2026787+141
Oct 16, 2026646+54
Oct 15, 2026592+181
Oct 14, 2026411+337
Oct 13, 2026740
Oct 09, 202674No prior observation