OITracker Cboe delayed data

Contract OI history

Back to ZTS

Jan 21, 2028 EXPIRATION

ZTS $50.00 Put

ZTS280121P00050000

Latest saved OI146Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTS $50.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 165820 2026-10-02: 162 OI2026-10-05: 164 OI2026-10-06: 164 OI2026-10-07: 165 OI2026-10-08: 165 OI2026-10-09: 165 OI2026-10-12: 162 OI2026-10-14: 157 OI2026-10-15: 157 OI2026-10-16: 146 OI2026-10-21: 146 OI2026-10-23: 146 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ZTS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1460
Oct 21, 20261460
Oct 16, 2026146-11
Oct 15, 20261570
Oct 14, 2026157-5
Oct 12, 2026162-3
Oct 09, 20261650
Oct 08, 20261650
Oct 07, 2026165+1
Oct 06, 20261640
Oct 05, 2026164+2
Oct 02, 2026162No prior observation