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Contract OI history

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Dec 18, 2026 EXPIRATION

ET $21.00 Put

ET261218P00021000

Latest saved OI303Oct 08, 2026
Last change0vs previous saved observation
Saved market days5Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ET $21.00 put open interest history 5 saved observations from 2026-10-02 to 2026-10-08. Exact values and changes are listed in the table below. 3031510 2026-10-02: 303 OI2026-10-05: 303 OI2026-10-06: 303 OI2026-10-07: 303 OI2026-10-08: 303 OI Oct 02, 2026Oct 08, 2026

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

ET contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 08, 2026Viewing3030
Oct 07, 20263030
Oct 06, 20263030
Oct 05, 20263030
Oct 02, 2026303No prior observation