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Contract OI history

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Oct 23, 2026 EXPIRATION

ACHR $3.50 Put

ACHR261023P00003500

Latest saved OI403Oct 23, 2026
Last change+43vs 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. 4032010 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 1 OI2026-10-08: 1 OI2026-10-09: 23 OI2026-10-13: 24 OI2026-10-14: 24 OI2026-10-15: 265 OI2026-10-16: 269 OI2026-10-21: 360 OI2026-10-23: 403 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, 2026Viewing403+43
Oct 21, 2026360+91
Oct 16, 2026269+4
Oct 15, 2026265+241
Oct 14, 2026240
Oct 13, 202624+1
Oct 09, 202623+22
Oct 08, 202610
Oct 07, 20261+1
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation