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Contract OI history

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Oct 23, 2026 EXPIRATION

ACHR $5.50 Put

ACHR261023P00005500

Latest saved OI58Oct 23, 2026
Last change-124vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $5.50 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. 3251620 2026-10-02: 323 OI2026-10-05: 312 OI2026-10-06: 302 OI2026-10-07: 302 OI2026-10-08: 302 OI2026-10-09: 312 OI2026-10-13: 325 OI2026-10-14: 325 OI2026-10-15: 312 OI2026-10-16: 297 OI2026-10-21: 182 OI2026-10-23: 58 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, 2026Viewing58-124
Oct 21, 2026182-115
Oct 16, 2026297-15
Oct 15, 2026312-13
Oct 14, 20263250
Oct 13, 2026325+13
Oct 09, 2026312+10
Oct 08, 20263020
Oct 07, 20263020
Oct 06, 2026302-10
Oct 05, 2026312-11
Oct 02, 2026323No prior observation