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Contract OI history

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Dec 18, 2026 EXPIRATION

ZBIO $35.00 Call

ZBIO261218C00035000

Latest saved OI529Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZBIO $35.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5292640 2026-10-09: 527 OI2026-10-13: 527 OI2026-10-14: 529 OI2026-10-16: 529 OI2026-10-20: 529 OI2026-10-23: 529 OI Oct 09, 2026Oct 23, 2026

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

ZBIO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20265290
Oct 20, 2026Viewing5290
Oct 16, 20265290
Oct 14, 2026529+2
Oct 13, 20265270
Oct 09, 2026527No prior observation