OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

ALT $4.00 Call

ALT280121C00004000

Latest saved OI1,607Oct 20, 2026
Last change-5vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALT $4.00 call open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 1,6128060 2026-10-09: 1,569 OI2026-10-13: 1,569 OI2026-10-14: 1,603 OI2026-10-16: 1,612 OI2026-10-20: 1,607 OI Oct 09, 2026Oct 20, 2026

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

ALT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing1,607-5
Oct 16, 20261,612+9
Oct 14, 20261,603+34
Oct 13, 20261,5690
Oct 09, 20261,569No prior observation