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Contract OI history

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Nov 20, 2026 EXPIRATION

BDTX $2.50 Call

BDTX261120C00002500

Latest saved OI117Oct 23, 2026
Last change+28vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BDTX $2.50 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. 117580 2026-10-09: 88 OI2026-10-13: 88 OI2026-10-14: 88 OI2026-10-16: 88 OI2026-10-20: 89 OI2026-10-23: 117 OI Oct 09, 2026Oct 23, 2026

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

BDTX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing117+28
Oct 20, 202689+1
Oct 16, 2026880
Oct 14, 2026880
Oct 13, 2026880
Oct 09, 202688No prior observation