OITracker Cboe delayed data

Contract OI history

Back to ZS

Nov 20, 2026 EXPIRATION

ZS $155.00 Put

ZS261120P00155000

Latest saved OI993Oct 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. 1,0245120 2026-10-09: 1,024 OI2026-10-12: 999 OI2026-10-14: 993 OI2026-10-15: 993 OI2026-10-16: 993 OI2026-10-21: 994 OI2026-10-23: 993 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, 2026993-1
Oct 21, 2026Viewing994+1
Oct 16, 20269930
Oct 15, 20269930
Oct 14, 2026993-6
Oct 12, 2026999-25
Oct 09, 20261,024No prior observation