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Contract OI history

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May 21, 2027 EXPIRATION

OBIO $7.50 Call

OBIO270521C00007500

Latest saved OI735Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
OBIO $7.50 call open interest history 7 saved observations from 2026-10-07 to 2026-10-23. Exact values and changes are listed in the table below. 7353670 2026-10-07: 50 OI2026-10-09: 50 OI2026-10-13: 231 OI2026-10-14: 563 OI2026-10-16: 727 OI2026-10-20: 735 OI2026-10-23: 735 OI Oct 07, 2026Oct 23, 2026

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

OBIO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20267350
Oct 20, 2026Viewing735+8
Oct 16, 2026727+164
Oct 14, 2026563+332
Oct 13, 2026231+181
Oct 09, 2026500
Oct 07, 202650No prior observation