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Contract OI history

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Nov 06, 2026 EXPIRATION

ACHR $3.50 Put

ACHR261106P00003500

Latest saved OI1,250Oct 23, 2026
Last change+767vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $3.50 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. 1,2506250 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 1 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 273 OI2026-10-13: 275 OI2026-10-14: 275 OI2026-10-15: 337 OI2026-10-16: 337 OI2026-10-21: 483 OI2026-10-23: 1,250 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, 2026Viewing1,250+767
Oct 21, 2026483+146
Oct 16, 20263370
Oct 15, 2026337+62
Oct 14, 20262750
Oct 13, 2026275+2
Oct 09, 2026273+271
Oct 08, 202620
Oct 07, 20262+1
Oct 06, 20261+1
Oct 05, 202600
Oct 02, 20260No prior observation