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Contract OI history

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Dec 18, 2026 EXPIRATION

BDTX $2.50 Call

BDTX261218C00002500

Latest saved OI507Oct 23, 2026
Last change+9vs 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. 5072530 2026-10-09: 483 OI2026-10-13: 498 OI2026-10-14: 498 OI2026-10-16: 498 OI2026-10-20: 498 OI2026-10-23: 507 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, 2026Viewing507+9
Oct 20, 20264980
Oct 16, 20264980
Oct 14, 20264980
Oct 13, 2026498+15
Oct 09, 2026483No prior observation