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Contract OI history

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Oct 16, 2026 EXPIRATION

ET $20.50 Put

ET261016P00020500

Latest saved OI572Oct 08, 2026
Last change+1vs 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. 5722860 2026-10-02: 216 OI2026-10-05: 565 OI2026-10-06: 569 OI2026-10-07: 571 OI2026-10-08: 572 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, 2026Viewing572+1
Oct 07, 2026571+2
Oct 06, 2026569+4
Oct 05, 2026565+349
Oct 02, 2026216No prior observation