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Contract OI history

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Apr 16, 2027 EXPIRATION

ACHR $4.00 Put

ACHR270416P00004000

Latest saved OI642Oct 23, 2026
Last change+31vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $4.00 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. 6423210 2026-10-02: 341 OI2026-10-05: 373 OI2026-10-06: 387 OI2026-10-07: 495 OI2026-10-08: 495 OI2026-10-09: 517 OI2026-10-13: 606 OI2026-10-14: 606 OI2026-10-15: 635 OI2026-10-16: 623 OI2026-10-21: 611 OI2026-10-23: 642 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, 2026Viewing642+31
Oct 21, 2026611-12
Oct 16, 2026623-12
Oct 15, 2026635+29
Oct 14, 20266060
Oct 13, 2026606+89
Oct 09, 2026517+22
Oct 08, 20264950
Oct 07, 2026495+108
Oct 06, 2026387+14
Oct 05, 2026373+32
Oct 02, 2026341No prior observation