OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIIB $260.00 Call

BIIB270115C00260000

Latest saved OI366Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BIIB $260.00 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. 3821910 2026-10-09: 382 OI2026-10-13: 348 OI2026-10-14: 348 OI2026-10-15: 348 OI2026-10-16: 349 OI2026-10-21: 363 OI2026-10-23: 366 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, 2026Viewing366+3
Oct 21, 2026363+14
Oct 16, 2026349+1
Oct 15, 20263480
Oct 14, 20263480
Oct 13, 2026348-34
Oct 09, 2026382No prior observation