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Contract OI history

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Jan 15, 2027 EXPIRATION

HAFN $7.50 Put

HAFN270115P00007500

Latest saved OI1,216Oct 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 $7.50 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. 1,2176080 2026-10-02: 1,217 OI2026-10-05: 1,217 OI2026-10-06: 1,217 OI2026-10-07: 1,217 OI2026-10-09: 1,216 OI2026-10-13: 1,216 OI2026-10-14: 1,216 OI2026-10-16: 1,216 OI2026-10-20: 1,216 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, 2026Viewing1,2160
Oct 16, 20261,2160
Oct 14, 20261,2160
Oct 13, 20261,2160
Oct 09, 20261,216-1
Oct 07, 20261,2170
Oct 06, 20261,2170
Oct 05, 20261,2170
Oct 02, 20261,217No prior observation