OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $240.00 Call

BIIB270115C00240000

Latest saved OI970Oct 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 $240.00 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. 9714850 2026-10-09: 830 OI2026-10-13: 971 OI2026-10-14: 971 OI2026-10-15: 971 OI2026-10-16: 966 OI2026-10-21: 970 OI2026-10-23: 970 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, 2026Viewing9700
Oct 21, 2026970+4
Oct 16, 2026966-5
Oct 15, 20269710
Oct 14, 20269710
Oct 13, 2026971+141
Oct 09, 2026830No prior observation