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Contract OI history

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Nov 20, 2026 EXPIRATION

HAFN $10.00 Call

HAFN261120C00010000

Latest saved OI509Oct 20, 2026
Last change+26vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAFN $10.00 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. 5092540 2026-10-02: 163 OI2026-10-05: 301 OI2026-10-06: 325 OI2026-10-07: 325 OI2026-10-09: 439 OI2026-10-13: 462 OI2026-10-14: 471 OI2026-10-16: 483 OI2026-10-20: 509 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, 2026Viewing509+26
Oct 16, 2026483+12
Oct 14, 2026471+9
Oct 13, 2026462+23
Oct 09, 2026439+114
Oct 07, 20263250
Oct 06, 2026325+24
Oct 05, 2026301+138
Oct 02, 2026163No prior observation