OITracker Cboe delayed data

Contract OI history

Back to ACI

Jan 21, 2028 EXPIRATION

ACI $20.00 Call

ACI280121C00020000

Latest saved OI2,957Oct 23, 2026
Last change+995vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ACI $20.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,9571,4780 2026-10-02: 1,955 OI2026-10-05: 1,955 OI2026-10-06: 1,955 OI2026-10-07: 1,955 OI2026-10-08: 1,955 OI2026-10-09: 1,962 OI2026-10-13: 1,962 OI2026-10-14: 1,962 OI2026-10-15: 1,955 OI2026-10-16: 1,972 OI2026-10-21: 1,962 OI2026-10-23: 2,957 OI Oct 02, 2026Oct 23, 2026

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

ACI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,957+995
Oct 21, 20261,962-10
Oct 16, 20261,972+17
Oct 15, 20261,955-7
Oct 14, 20261,9620
Oct 13, 20261,9620
Oct 09, 20261,962+7
Oct 08, 20261,9550
Oct 07, 20261,9550
Oct 06, 20261,9550
Oct 05, 20261,9550
Oct 02, 20261,955No prior observation