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Contract OI history

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Oct 30, 2026 EXPIRATION

ACHR $4.50 Put

ACHR261030P00004500

Latest saved OI893Oct 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 $4.50 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. 9034510 2026-10-02: 542 OI2026-10-05: 780 OI2026-10-06: 775 OI2026-10-07: 785 OI2026-10-08: 785 OI2026-10-09: 819 OI2026-10-13: 894 OI2026-10-14: 894 OI2026-10-15: 903 OI2026-10-16: 902 OI2026-10-21: 894 OI2026-10-23: 893 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, 2026Viewing893-1
Oct 21, 2026894-8
Oct 16, 2026902-1
Oct 15, 2026903+9
Oct 14, 20268940
Oct 13, 2026894+75
Oct 09, 2026819+34
Oct 08, 20267850
Oct 07, 2026785+10
Oct 06, 2026775-5
Oct 05, 2026780+238
Oct 02, 2026542No prior observation