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Contract OI history

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Jan 21, 2028 EXPIRATION

ACHR $15.00 Put

ACHR280121P00015000

Latest saved OI371Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACHR $15.00 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. 4152070 2026-10-02: 392 OI2026-10-05: 415 OI2026-10-06: 415 OI2026-10-07: 415 OI2026-10-08: 415 OI2026-10-09: 415 OI2026-10-13: 415 OI2026-10-14: 415 OI2026-10-15: 375 OI2026-10-16: 375 OI2026-10-21: 375 OI2026-10-23: 371 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, 2026Viewing371-4
Oct 21, 20263750
Oct 16, 20263750
Oct 15, 2026375-40
Oct 14, 20264150
Oct 13, 20264150
Oct 09, 20264150
Oct 08, 20264150
Oct 07, 20264150
Oct 06, 20264150
Oct 05, 2026415+23
Oct 02, 2026392No prior observation