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Contract OI history

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Jan 15, 2027 EXPIRATION

HAPN $18.00 Call

HAPN270115C00018000

Latest saved OI1,516Oct 20, 2026
Last change0vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
HAPN $18.00 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. 1,5167580 2026-10-09: 1,510 OI2026-10-13: 1,510 OI2026-10-14: 1,511 OI2026-10-16: 1,516 OI2026-10-20: 1,516 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, 2026Viewing1,5160
Oct 16, 20261,516+5
Oct 14, 20261,511+1
Oct 13, 20261,5100
Oct 09, 20261,510No prior observation