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Contract OI history

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Apr 16, 2027 EXPIRATION

ACHR $9.00 Put

ACHR270416P00009000

Latest saved OI95Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $9.00 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. 95470 2026-10-02: 57 OI2026-10-05: 68 OI2026-10-06: 68 OI2026-10-07: 68 OI2026-10-08: 68 OI2026-10-09: 68 OI2026-10-13: 89 OI2026-10-14: 89 OI2026-10-15: 89 OI2026-10-16: 88 OI2026-10-21: 94 OI2026-10-23: 95 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, 2026Viewing95+1
Oct 21, 202694+6
Oct 16, 202688-1
Oct 15, 2026890
Oct 14, 2026890
Oct 13, 202689+21
Oct 09, 2026680
Oct 08, 2026680
Oct 07, 2026680
Oct 06, 2026680
Oct 05, 202668+11
Oct 02, 202657No prior observation