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Contract OI history

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Mar 19, 2027 EXPIRATION

ZTS $40.00 Put

ZTS270319P00040000

Latest saved OI1,281Oct 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 $40.00 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. 1,2816400 2026-10-02: 1,081 OI2026-10-05: 1,081 OI2026-10-06: 1,081 OI2026-10-07: 1,181 OI2026-10-08: 1,181 OI2026-10-09: 1,181 OI2026-10-12: 1,181 OI2026-10-14: 1,281 OI2026-10-15: 1,281 OI2026-10-16: 1,281 OI2026-10-21: 1,281 OI2026-10-23: 1,281 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, 2026Viewing1,2810
Oct 21, 20261,2810
Oct 16, 20261,2810
Oct 15, 20261,2810
Oct 14, 20261,281+100
Oct 12, 20261,1810
Oct 09, 20261,1810
Oct 08, 20261,1810
Oct 07, 20261,181+100
Oct 06, 20261,0810
Oct 05, 20261,0810
Oct 02, 20261,081No prior observation