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Contract OI history

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Oct 16, 2026 EXPIRATION

ET $21.50 Call

ET261016C00021500

Latest saved OI2,140Oct 08, 2026
Last change+11vs previous saved observation
Saved market days5Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ET $21.50 call open interest history 5 saved observations from 2026-10-02 to 2026-10-08. Exact values and changes are listed in the table below. 2,1401,0700 2026-10-02: 1,667 OI2026-10-05: 1,679 OI2026-10-06: 1,996 OI2026-10-07: 2,129 OI2026-10-08: 2,140 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, 2026Viewing2,140+11
Oct 07, 20262,129+133
Oct 06, 20261,996+317
Oct 05, 20261,679+12
Oct 02, 20261,667No prior observation