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Contract OI history

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Mar 19, 2027 EXPIRATION

BIIB $125.00 Put

BIIB270319P00125000

Latest saved OI10Oct 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 $125.00 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. 1050 2026-10-09: 10 OI2026-10-13: 10 OI2026-10-14: 10 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-21: 10 OI2026-10-23: 10 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, 2026Viewing100
Oct 21, 2026100
Oct 16, 2026100
Oct 15, 2026100
Oct 14, 2026100
Oct 13, 2026100
Oct 09, 202610No prior observation