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Contract OI history

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Dec 18, 2026 EXPIRATION

ZTS $55.00 Put

ZTS261218P00055000

Latest saved OI592Oct 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. 5942970 2026-10-02: 593 OI2026-10-05: 594 OI2026-10-06: 594 OI2026-10-07: 590 OI2026-10-08: 590 OI2026-10-09: 590 OI2026-10-12: 588 OI2026-10-14: 593 OI2026-10-15: 592 OI2026-10-16: 592 OI2026-10-21: 592 OI2026-10-23: 592 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, 2026Viewing5920
Oct 21, 20265920
Oct 16, 20265920
Oct 15, 2026592-1
Oct 14, 2026593+5
Oct 12, 2026588-2
Oct 09, 20265900
Oct 08, 20265900
Oct 07, 2026590-4
Oct 06, 20265940
Oct 05, 2026594+1
Oct 02, 2026593No prior observation