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Contract OI history

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Mar 19, 2027 EXPIRATION

ZTS $55.00 Put

ZTS270319P00055000

Latest saved OI380Oct 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 $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. 3801900 2026-10-02: 374 OI2026-10-05: 374 OI2026-10-06: 374 OI2026-10-07: 374 OI2026-10-08: 374 OI2026-10-09: 374 OI2026-10-12: 373 OI2026-10-14: 376 OI2026-10-15: 378 OI2026-10-16: 378 OI2026-10-21: 380 OI2026-10-23: 380 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, 2026Viewing3800
Oct 21, 2026380+2
Oct 16, 20263780
Oct 15, 2026378+2
Oct 14, 2026376+3
Oct 12, 2026373-1
Oct 09, 20263740
Oct 08, 20263740
Oct 07, 20263740
Oct 06, 20263740
Oct 05, 20263740
Oct 02, 2026374No prior observation