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Contract OI history

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Jan 21, 2028 EXPIRATION

ACHR $5.00 Put

ACHR280121P00005000

Latest saved OI4,790Oct 23, 2026
Last change+45vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $5.00 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. 4,7902,3950 2026-10-02: 4,084 OI2026-10-05: 4,227 OI2026-10-06: 4,251 OI2026-10-07: 4,271 OI2026-10-08: 4,271 OI2026-10-09: 4,278 OI2026-10-13: 4,279 OI2026-10-14: 4,279 OI2026-10-15: 4,283 OI2026-10-16: 4,290 OI2026-10-21: 4,745 OI2026-10-23: 4,790 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, 2026Viewing4,790+45
Oct 21, 20264,745+455
Oct 16, 20264,290+7
Oct 15, 20264,283+4
Oct 14, 20264,2790
Oct 13, 20264,279+1
Oct 09, 20264,278+7
Oct 08, 20264,2710
Oct 07, 20264,271+20
Oct 06, 20264,251+24
Oct 05, 20264,227+143
Oct 02, 20264,084No prior observation