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Contract OI history

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Oct 09, 2026 EXPIRATION

ET $20.50 Put

ET261009P00020500

Latest saved OI1,147Oct 08, 2026
Last change-83vs previous saved observation
Saved market days5Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ET $20.50 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. 1,2306150 2026-10-02: 739 OI2026-10-05: 781 OI2026-10-06: 1,052 OI2026-10-07: 1,230 OI2026-10-08: 1,147 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, 2026Viewing1,147-83
Oct 07, 20261,230+178
Oct 06, 20261,052+271
Oct 05, 2026781+42
Oct 02, 2026739No prior observation