OITracker Cboe delayed data

Contract OI history

Back to ACAD

Nov 20, 2026 EXPIRATION

ACAD $18.00 Put

ACAD261120P00018000

Latest saved OI3,988Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ACAD $18.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3,9881,9940 2026-10-08: 3,969 OI2026-10-09: 3,969 OI2026-10-13: 3,983 OI2026-10-14: 3,983 OI2026-10-16: 3,983 OI2026-10-20: 3,988 OI2026-10-23: 3,988 OI Oct 08, 2026Oct 23, 2026

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

ACAD contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,9880
Oct 20, 20263,988+5
Oct 16, 20263,9830
Oct 14, 20263,9830
Oct 13, 20263,983+14
Oct 09, 20263,9690
Oct 08, 20263,969No prior observation