OITracker Cboe delayed data

Contract OI history

Back to ZS

Dec 18, 2026 EXPIRATION

ZS $195.00 Put

ZS261218P00195000

Latest saved OI299Oct 23, 2026
Last change-7vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $195.00 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. 3061530 2026-10-09: 286 OI2026-10-12: 290 OI2026-10-14: 289 OI2026-10-15: 299 OI2026-10-16: 299 OI2026-10-21: 306 OI2026-10-23: 299 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, 2026299-7
Oct 21, 2026Viewing306+7
Oct 16, 20262990
Oct 15, 2026299+10
Oct 14, 2026289-1
Oct 12, 2026290+4
Oct 09, 2026286No prior observation