OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ZS $320.00 Call

ZS270115C00320000

Latest saved OI2,842Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $320.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2,8431,4210 2026-10-09: 2,741 OI2026-10-12: 2,743 OI2026-10-14: 2,743 OI2026-10-15: 2,743 OI2026-10-16: 2,743 OI2026-10-21: 2,843 OI2026-10-23: 2,842 OI Oct 09, 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, 20262,842-1
Oct 21, 2026Viewing2,843+100
Oct 16, 20262,7430
Oct 15, 20262,7430
Oct 14, 20262,7430
Oct 12, 20262,743+2
Oct 09, 20262,741No prior observation