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Contract OI history

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Jan 15, 2027 EXPIRATION

HAPN $19.00 Call

HAPN270115C00019000

Latest saved OI900Oct 20, 2026
Last change+1vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
HAPN $19.00 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. 9004500 2026-10-09: 899 OI2026-10-13: 899 OI2026-10-14: 899 OI2026-10-16: 899 OI2026-10-20: 900 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, 2026Viewing900+1
Oct 16, 20268990
Oct 14, 20268990
Oct 13, 20268990
Oct 09, 2026899No prior observation