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Contract OI history

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Dec 18, 2026 EXPIRATION

ZTS $85.00 Call

ZTS261218C00085000

Latest saved OI960Oct 23, 2026
Last change+310vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTS $85.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 9604800 2026-10-02: 491 OI2026-10-05: 491 OI2026-10-06: 490 OI2026-10-07: 483 OI2026-10-08: 483 OI2026-10-09: 493 OI2026-10-12: 493 OI2026-10-14: 541 OI2026-10-15: 541 OI2026-10-16: 569 OI2026-10-21: 650 OI2026-10-23: 960 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, 2026Viewing960+310
Oct 21, 2026650+81
Oct 16, 2026569+28
Oct 15, 20265410
Oct 14, 2026541+48
Oct 12, 20264930
Oct 09, 2026493+10
Oct 08, 20264830
Oct 07, 2026483-7
Oct 06, 2026490-1
Oct 05, 20264910
Oct 02, 2026491No prior observation