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Contract OI history

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Oct 30, 2026 EXPIRATION

ET $20.50 Put

ET261030P00020500

Latest saved OI131Oct 08, 2026
Last change+21vs 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. 131650 2026-10-02: 96 OI2026-10-05: 96 OI2026-10-06: 110 OI2026-10-07: 110 OI2026-10-08: 131 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, 2026Viewing131+21
Oct 07, 20261100
Oct 06, 2026110+14
Oct 05, 2026960
Oct 02, 202696No prior observation