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Contract OI history

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Nov 06, 2026 EXPIRATION

ACHR $4.00 Put

ACHR261106P00004000

Latest saved OI290Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $4.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2901450 2026-10-02: 4 OI2026-10-05: 5 OI2026-10-06: 18 OI2026-10-07: 32 OI2026-10-08: 32 OI2026-10-09: 39 OI2026-10-13: 62 OI2026-10-14: 62 OI2026-10-15: 139 OI2026-10-16: 146 OI2026-10-21: 285 OI2026-10-23: 290 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, 2026Viewing290+5
Oct 21, 2026285+139
Oct 16, 2026146+7
Oct 15, 2026139+77
Oct 14, 2026620
Oct 13, 202662+23
Oct 09, 202639+7
Oct 08, 2026320
Oct 07, 202632+14
Oct 06, 202618+13
Oct 05, 20265+1
Oct 02, 20264No prior observation