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Contract OI history

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Jan 21, 2028 EXPIRATION

ZTS $50.00 Call

ZTS280121C00050000

Latest saved OI775Oct 23, 2026
Last change-35vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTS $50.00 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. 8324160 2026-10-02: 832 OI2026-10-05: 832 OI2026-10-06: 832 OI2026-10-07: 832 OI2026-10-08: 832 OI2026-10-09: 832 OI2026-10-12: 831 OI2026-10-14: 827 OI2026-10-15: 817 OI2026-10-16: 814 OI2026-10-21: 810 OI2026-10-23: 775 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, 2026Viewing775-35
Oct 21, 2026810-4
Oct 16, 2026814-3
Oct 15, 2026817-10
Oct 14, 2026827-4
Oct 12, 2026831-1
Oct 09, 20268320
Oct 08, 20268320
Oct 07, 20268320
Oct 06, 20268320
Oct 05, 20268320
Oct 02, 2026832No prior observation