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Contract OI history

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Jan 15, 2027 EXPIRATION

ACHR $9.00 Put

ACHR270115P00009000

Latest saved OI335Oct 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. 4102050 2026-10-02: 409 OI2026-10-05: 410 OI2026-10-06: 403 OI2026-10-07: 403 OI2026-10-08: 403 OI2026-10-09: 365 OI2026-10-13: 344 OI2026-10-14: 344 OI2026-10-15: 340 OI2026-10-16: 340 OI2026-10-21: 334 OI2026-10-23: 335 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, 2026Viewing335+1
Oct 21, 2026334-6
Oct 16, 20263400
Oct 15, 2026340-4
Oct 14, 20263440
Oct 13, 2026344-21
Oct 09, 2026365-38
Oct 08, 20264030
Oct 07, 20264030
Oct 06, 2026403-7
Oct 05, 2026410+1
Oct 02, 2026409No prior observation