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Contract OI history

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Oct 30, 2026 EXPIRATION

ACHR $4.00 Put

ACHR261030P00004000

Latest saved OI592Oct 23, 2026
Last change+32vs 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. 5922960 2026-10-02: 74 OI2026-10-05: 305 OI2026-10-06: 316 OI2026-10-07: 317 OI2026-10-08: 317 OI2026-10-09: 352 OI2026-10-13: 428 OI2026-10-14: 428 OI2026-10-15: 446 OI2026-10-16: 460 OI2026-10-21: 560 OI2026-10-23: 592 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, 2026Viewing592+32
Oct 21, 2026560+100
Oct 16, 2026460+14
Oct 15, 2026446+18
Oct 14, 20264280
Oct 13, 2026428+76
Oct 09, 2026352+35
Oct 08, 20263170
Oct 07, 2026317+1
Oct 06, 2026316+11
Oct 05, 2026305+231
Oct 02, 202674No prior observation