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Contract OI history

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Nov 20, 2026 EXPIRATION

ACMR $50.00 Put

ACMR261120P00050000

Latest saved OI335Oct 21, 2026
Last change+3vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ACMR $50.00 put open interest history 5 saved observations from 2026-10-09 to 2026-10-21. Exact values and changes are listed in the table below. 3351670 2026-10-09: 329 OI2026-10-13: 330 OI2026-10-14: 330 OI2026-10-16: 332 OI2026-10-21: 335 OI Oct 09, 2026Oct 21, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ACMR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing335+3
Oct 16, 2026332+2
Oct 14, 20263300
Oct 13, 2026330+1
Oct 09, 2026329No prior observation