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Contract OI history

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Jan 21, 2028 EXPIRATION

ZTS $220.00 Call

ZTS280121C00220000

Latest saved OI1,503Oct 23, 2026
Last change-15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTS $220.00 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. 1,5257620 2026-10-02: 1,509 OI2026-10-05: 1,509 OI2026-10-06: 1,519 OI2026-10-07: 1,519 OI2026-10-08: 1,519 OI2026-10-09: 1,519 OI2026-10-12: 1,525 OI2026-10-14: 1,525 OI2026-10-15: 1,525 OI2026-10-16: 1,525 OI2026-10-21: 1,518 OI2026-10-23: 1,503 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, 2026Viewing1,503-15
Oct 21, 20261,518-7
Oct 16, 20261,5250
Oct 15, 20261,5250
Oct 14, 20261,5250
Oct 12, 20261,525+6
Oct 09, 20261,5190
Oct 08, 20261,5190
Oct 07, 20261,5190
Oct 06, 20261,519+10
Oct 05, 20261,5090
Oct 02, 20261,509No prior observation