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Contract OI history

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Dec 18, 2026 EXPIRATION

BIOA $5.00 Put

BIOA261218P00005000

Latest saved OI619Oct 23, 2026
Last change+24vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BIOA $5.00 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. 6193090 2026-10-08: 224 OI2026-10-09: 224 OI2026-10-13: 370 OI2026-10-14: 464 OI2026-10-16: 544 OI2026-10-20: 595 OI2026-10-23: 619 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, 2026Viewing619+24
Oct 20, 2026595+51
Oct 16, 2026544+80
Oct 14, 2026464+94
Oct 13, 2026370+146
Oct 09, 20262240
Oct 08, 2026224No prior observation