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Contract OI history

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Nov 20, 2026 EXPIRATION

ACMR $57.50 Put

ACMR261120P00057500

Latest saved OI14Oct 21, 2026
Last change+12vs previous saved observation
Saved market days4Oct 13, 2026 onwards
Daily open interest Hover a point for its date and OI
ACMR $57.50 put open interest history 4 saved observations from 2026-10-13 to 2026-10-21. Exact values and changes are listed in the table below. 1470 2026-10-13: 0 OI2026-10-14: 0 OI2026-10-16: 2 OI2026-10-21: 14 OI Oct 13, 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, 2026Viewing14+12
Oct 16, 20262+2
Oct 14, 202600
Oct 13, 20260No prior observation