OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ZS $155.00 Put

ZS270115P00155000

Latest saved OI856Oct 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 $155.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 8584290 2026-10-09: 858 OI2026-10-12: 858 OI2026-10-14: 857 OI2026-10-15: 857 OI2026-10-16: 857 OI2026-10-21: 857 OI2026-10-23: 856 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, 2026Viewing856-1
Oct 21, 20268570
Oct 16, 20268570
Oct 15, 20268570
Oct 14, 2026857-1
Oct 12, 20268580
Oct 09, 2026858No prior observation