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Contract OI history

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Jan 15, 2027 EXPIRATION

ACMR $55.00 Put

ACMR270115P00055000

Latest saved OI131Oct 21, 2026
Last change+2vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ACMR $55.00 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. 131650 2026-10-09: 128 OI2026-10-13: 128 OI2026-10-14: 128 OI2026-10-16: 129 OI2026-10-21: 131 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, 2026Viewing131+2
Oct 16, 2026129+1
Oct 14, 20261280
Oct 13, 20261280
Oct 09, 2026128No prior observation