OITracker Cboe delayed data

Contract OI history

Back to ZS

Oct 30, 2026 EXPIRATION

ZS $212.50 Put

ZS261030P00212500

Latest saved OI293Oct 23, 2026
Last change-9vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ZS $212.50 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. 3021510 2026-10-09: 258 OI2026-10-12: 258 OI2026-10-14: 261 OI2026-10-15: 261 OI2026-10-16: 261 OI2026-10-21: 302 OI2026-10-23: 293 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, 2026Viewing293-9
Oct 21, 2026302+41
Oct 16, 20262610
Oct 15, 20262610
Oct 14, 2026261+3
Oct 12, 20262580
Oct 09, 2026258No prior observation