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Contract OI history

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Jan 15, 2027 EXPIRATION

ZTO $21.00 Put

ZTO270115P00021000

Latest saved OI402Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZTO $21.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4022010 2026-10-02: 362 OI2026-10-05: 362 OI2026-10-06: 362 OI2026-10-07: 362 OI2026-10-08: 362 OI2026-10-09: 362 OI2026-10-13: 354 OI2026-10-14: 354 OI2026-10-16: 354 OI2026-10-20: 402 OI2026-10-23: 402 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ZTO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4020
Oct 20, 2026402+48
Oct 16, 20263540
Oct 14, 20263540
Oct 13, 2026354-8
Oct 09, 20263620
Oct 08, 20263620
Oct 07, 20263620
Oct 06, 20263620
Oct 05, 20263620
Oct 02, 2026362No prior observation