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Contract OI history

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Apr 16, 2027 EXPIRATION

HAFN $12.50 Call

HAFN270416C00012500

Latest saved OI1,025Oct 20, 2026
Last change+10vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAFN $12.50 call open interest history 9 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 1,0255120 2026-10-02: 995 OI2026-10-05: 995 OI2026-10-06: 1,002 OI2026-10-07: 1,002 OI2026-10-09: 1,005 OI2026-10-13: 1,010 OI2026-10-14: 1,010 OI2026-10-16: 1,015 OI2026-10-20: 1,025 OI Oct 02, 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, 2026Viewing1,025+10
Oct 16, 20261,015+5
Oct 14, 20261,0100
Oct 13, 20261,010+5
Oct 09, 20261,005+3
Oct 07, 20261,0020
Oct 06, 20261,002+7
Oct 05, 20269950
Oct 02, 2026995No prior observation