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Contract OI history

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Jan 21, 2028 EXPIRATION

ACHR $12.00 Put

ACHR280121P00012000

Latest saved OI1,049Oct 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 $12.00 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. 1,0525260 2026-10-02: 996 OI2026-10-05: 1,018 OI2026-10-06: 1,043 OI2026-10-07: 1,043 OI2026-10-08: 1,043 OI2026-10-09: 1,043 OI2026-10-13: 1,033 OI2026-10-14: 1,033 OI2026-10-15: 1,052 OI2026-10-16: 1,048 OI2026-10-21: 1,048 OI2026-10-23: 1,049 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, 2026Viewing1,049+1
Oct 21, 20261,0480
Oct 16, 20261,048-4
Oct 15, 20261,052+19
Oct 14, 20261,0330
Oct 13, 20261,033-10
Oct 09, 20261,0430
Oct 08, 20261,0430
Oct 07, 20261,0430
Oct 06, 20261,043+25
Oct 05, 20261,018+22
Oct 02, 2026996No prior observation