OITracker Cboe delayed data

Contract OI history

Back to ZS

Nov 20, 2026 EXPIRATION

ZS $255.00 Call

ZS261120C00255000

Latest saved OI173Oct 23, 2026
Last change+162vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $255.00 call open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 173860 2026-10-21: 11 OI2026-10-23: 173 OI Oct 21, 2026Oct 23, 2026

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

ZS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026173+162
Oct 21, 2026Viewing11No prior observation