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Contract OI history

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Oct 30, 2026 EXPIRATION

ET $21.00 Put

ET261030P00021000

Latest saved OI146Oct 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 $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. 146730 2026-10-02: 134 OI2026-10-05: 135 OI2026-10-06: 145 OI2026-10-07: 145 OI2026-10-08: 146 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, 2026Viewing146+1
Oct 07, 20261450
Oct 06, 2026145+10
Oct 05, 2026135+1
Oct 02, 2026134No prior observation