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Contract OI history

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Dec 18, 2026 EXPIRATION

HAFN $10.00 Call

HAFN261218C00010000

Latest saved OI20Oct 20, 2026
Last change+20vs previous saved observation
Saved market days2Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
HAFN $10.00 call open interest history 2 saved observations from 2026-10-16 to 2026-10-20. Exact values and changes are listed in the table below. 20100 2026-10-16: 0 OI2026-10-20: 20 OI Oct 16, 2026Oct 20, 2026

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

HAFN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing20+20
Oct 16, 20260No prior observation