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Contract OI history

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Nov 20, 2026 EXPIRATION

ACIU $2.50 Put

ACIU261120P00002500

Latest saved OI489Oct 23, 2026
Last change-94vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ACIU $2.50 put open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 5832910 2026-10-08: 561 OI2026-10-09: 561 OI2026-10-13: 583 OI2026-10-14: 583 OI2026-10-15: 583 OI2026-10-16: 583 OI2026-10-20: 583 OI2026-10-23: 489 OI Oct 08, 2026Oct 23, 2026

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

ACIU contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing489-94
Oct 20, 20265830
Oct 16, 20265830
Oct 15, 20265830
Oct 14, 20265830
Oct 13, 2026583+22
Oct 09, 20265610
Oct 08, 2026561No prior observation