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Contract OI history

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Dec 18, 2026 EXPIRATION

BBIO $55.00 Put

BBIO261218P00055000

Latest saved OI61Oct 23, 2026
Last change0vs previous saved observation
Saved market days3Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
BBIO $55.00 put open interest history 3 saved observations from 2026-10-16 to 2026-10-23. Exact values and changes are listed in the table below. 61300 2026-10-16: 0 OI2026-10-21: 61 OI2026-10-23: 61 OI Oct 16, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BBIO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing610
Oct 21, 202661+61
Oct 16, 20260No prior observation