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Contract OI history

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Oct 23, 2026 EXPIRATION

ACHR $4.50 Call

ACHR261023C00004500

Latest saved OI4,029Oct 23, 2026
Last change+250vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $4.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4,0292,0140 2026-10-02: 235 OI2026-10-05: 340 OI2026-10-06: 362 OI2026-10-07: 723 OI2026-10-08: 723 OI2026-10-09: 831 OI2026-10-13: 1,033 OI2026-10-14: 1,033 OI2026-10-15: 1,550 OI2026-10-16: 1,753 OI2026-10-21: 3,779 OI2026-10-23: 4,029 OI Oct 02, 2026Oct 23, 2026

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

ACHR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4,029+250
Oct 21, 20263,779+2,026
Oct 16, 20261,753+203
Oct 15, 20261,550+517
Oct 14, 20261,0330
Oct 13, 20261,033+202
Oct 09, 2026831+108
Oct 08, 20267230
Oct 07, 2026723+361
Oct 06, 2026362+22
Oct 05, 2026340+105
Oct 02, 2026235No prior observation