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Contract OI history

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Apr 16, 2027 EXPIRATION

BIOA $20.00 Put

BIOA270416P00020000

Latest saved OI14Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BIOA $20.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 37180 2026-10-08: 37 OI2026-10-09: 37 OI2026-10-13: 37 OI2026-10-14: 37 OI2026-10-16: 37 OI2026-10-20: 14 OI2026-10-23: 14 OI Oct 08, 2026Oct 23, 2026

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

BIOA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing140
Oct 20, 202614-23
Oct 16, 2026370
Oct 14, 2026370
Oct 13, 2026370
Oct 09, 2026370
Oct 08, 202637No prior observation