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Contract OI history

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Oct 30, 2026 EXPIRATION

ACHR $5.50 Put

ACHR261030P00005500

Latest saved OI186Oct 23, 2026
Last change-144vs 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. 3311650 2026-10-02: 323 OI2026-10-05: 320 OI2026-10-06: 321 OI2026-10-07: 320 OI2026-10-08: 320 OI2026-10-09: 321 OI2026-10-13: 331 OI2026-10-14: 331 OI2026-10-15: 329 OI2026-10-16: 330 OI2026-10-21: 330 OI2026-10-23: 186 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, 2026Viewing186-144
Oct 21, 20263300
Oct 16, 2026330+1
Oct 15, 2026329-2
Oct 14, 20263310
Oct 13, 2026331+10
Oct 09, 2026321+1
Oct 08, 20263200
Oct 07, 2026320-1
Oct 06, 2026321+1
Oct 05, 2026320-3
Oct 02, 2026323No prior observation