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Contract OI history

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Jan 15, 2027 EXPIRATION

ACMR $40.00 Put

ACMR270115P00040000

Latest saved OI707Oct 21, 2026
Last change+428vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ACMR $40.00 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. 7073530 2026-10-09: 244 OI2026-10-13: 244 OI2026-10-14: 244 OI2026-10-16: 279 OI2026-10-21: 707 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, 2026Viewing707+428
Oct 16, 2026279+35
Oct 14, 20262440
Oct 13, 20262440
Oct 09, 2026244No prior observation