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Contract OI history

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Nov 20, 2026 EXPIRATION

HAPN $20.00 Call

HAPN261120C00020000

Latest saved OI979Oct 20, 2026
Last change+2vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
HAPN $20.00 call open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 9794890 2026-10-09: 976 OI2026-10-13: 975 OI2026-10-14: 975 OI2026-10-16: 977 OI2026-10-20: 979 OI Oct 09, 2026Oct 20, 2026

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

HAPN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing979+2
Oct 16, 2026977+2
Oct 14, 20269750
Oct 13, 2026975-1
Oct 09, 2026976No prior observation