OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

ZS $215.00 Put

ZS261030P00215000

Latest saved OI291Oct 23, 2026
Last change+55vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $215.00 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. 2911450 2026-10-09: 109 OI2026-10-12: 214 OI2026-10-14: 218 OI2026-10-15: 218 OI2026-10-16: 226 OI2026-10-21: 236 OI2026-10-23: 291 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, 2026Viewing291+55
Oct 21, 2026236+10
Oct 16, 2026226+8
Oct 15, 20262180
Oct 14, 2026218+4
Oct 12, 2026214+105
Oct 09, 2026109No prior observation