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Contract OI history

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Nov 06, 2026 EXPIRATION

ACHR $4.50 Put

ACHR261106P00004500

Latest saved OI870Oct 23, 2026
Last change+55vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $4.50 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. 8704350 2026-10-02: 287 OI2026-10-05: 364 OI2026-10-06: 372 OI2026-10-07: 407 OI2026-10-08: 407 OI2026-10-09: 419 OI2026-10-13: 755 OI2026-10-14: 755 OI2026-10-15: 761 OI2026-10-16: 811 OI2026-10-21: 815 OI2026-10-23: 870 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, 2026Viewing870+55
Oct 21, 2026815+4
Oct 16, 2026811+50
Oct 15, 2026761+6
Oct 14, 20267550
Oct 13, 2026755+336
Oct 09, 2026419+12
Oct 08, 20264070
Oct 07, 2026407+35
Oct 06, 2026372+8
Oct 05, 2026364+77
Oct 02, 2026287No prior observation