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Contract OI history

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Apr 21, 2028 EXPIRATION

T $20.00 Call

T280421C00020000

Latest saved OI688Oct 23, 2026
Last change-44vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $20.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7443720 2026-10-02: 744 OI2026-10-05: 744 OI2026-10-06: 742 OI2026-10-07: 742 OI2026-10-08: 742 OI2026-10-09: 726 OI2026-10-14: 726 OI2026-10-15: 726 OI2026-10-16: 726 OI2026-10-21: 732 OI2026-10-23: 688 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

T contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing688-44
Oct 21, 2026732+6
Oct 16, 20267260
Oct 15, 20267260
Oct 14, 20267260
Oct 09, 2026726-16
Oct 08, 20267420
Oct 07, 20267420
Oct 06, 2026742-2
Oct 05, 20267440
Oct 02, 2026744No prior observation