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Contract OI history

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Nov 20, 2026 EXPIRATION

ACM $55.00 Put

ACM261120P00055000

Latest saved OI129Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACM $55.00 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. 130650 2026-10-02: 29 OI2026-10-05: 23 OI2026-10-06: 23 OI2026-10-07: 23 OI2026-10-08: 34 OI2026-10-09: 26 OI2026-10-13: 26 OI2026-10-14: 26 OI2026-10-15: 26 OI2026-10-16: 27 OI2026-10-21: 130 OI2026-10-23: 129 OI Oct 02, 2026Oct 23, 2026

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

ACM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing129-1
Oct 21, 2026130+103
Oct 16, 202627+1
Oct 15, 2026260
Oct 14, 2026260
Oct 13, 2026260
Oct 09, 202626-8
Oct 08, 202634+11
Oct 07, 2026230
Oct 06, 2026230
Oct 05, 202623-6
Oct 02, 202629No prior observation