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Contract OI history

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Nov 20, 2026 EXPIRATION

ZTS $55.00 Put

ZTS261120P00055000

Latest saved OI754Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTS $55.00 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. 7553770 2026-10-02: 35 OI2026-10-05: 38 OI2026-10-06: 38 OI2026-10-07: 83 OI2026-10-08: 83 OI2026-10-09: 90 OI2026-10-12: 91 OI2026-10-14: 748 OI2026-10-15: 748 OI2026-10-16: 753 OI2026-10-21: 755 OI2026-10-23: 754 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, 2026Viewing754-1
Oct 21, 2026755+2
Oct 16, 2026753+5
Oct 15, 20267480
Oct 14, 2026748+657
Oct 12, 202691+1
Oct 09, 202690+7
Oct 08, 2026830
Oct 07, 202683+45
Oct 06, 2026380
Oct 05, 202638+3
Oct 02, 202635No prior observation