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Contract OI history

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Jan 15, 2027 EXPIRATION

BIOA $2.50 Put

BIOA270115P00002500

Latest saved OI609Oct 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 $2.50 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. 6093040 2026-10-08: 130 OI2026-10-09: 130 OI2026-10-13: 140 OI2026-10-14: 140 OI2026-10-16: 140 OI2026-10-20: 609 OI2026-10-23: 609 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, 2026Viewing6090
Oct 20, 2026609+469
Oct 16, 20261400
Oct 14, 20261400
Oct 13, 2026140+10
Oct 09, 20261300
Oct 08, 2026130No prior observation