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Contract OI history

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Jan 15, 2027 EXPIRATION

HAFN $10.00 Put

HAFN270115P00010000

Latest saved OI3,073Oct 20, 2026
Last change0vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAFN $10.00 put open interest history 9 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 3,0731,5360 2026-10-02: 37 OI2026-10-05: 57 OI2026-10-06: 57 OI2026-10-07: 57 OI2026-10-09: 57 OI2026-10-13: 3,073 OI2026-10-14: 3,073 OI2026-10-16: 3,073 OI2026-10-20: 3,073 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, 2026Viewing3,0730
Oct 16, 20263,0730
Oct 14, 20263,0730
Oct 13, 20263,073+3,016
Oct 09, 2026570
Oct 07, 2026570
Oct 06, 2026570
Oct 05, 202657+20
Oct 02, 202637No prior observation