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Contract OI history

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Dec 18, 2026 EXPIRATION

T $21.00 Put

T261218P00021000

Latest saved OI5,558Oct 23, 2026
Last change+32vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $21.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5,5582,7790 2026-10-02: 5,449 OI2026-10-05: 5,463 OI2026-10-06: 5,390 OI2026-10-07: 5,390 OI2026-10-08: 5,408 OI2026-10-09: 5,435 OI2026-10-14: 5,411 OI2026-10-15: 5,424 OI2026-10-16: 5,426 OI2026-10-21: 5,526 OI2026-10-23: 5,558 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, 2026Viewing5,558+32
Oct 21, 20265,526+100
Oct 16, 20265,426+2
Oct 15, 20265,424+13
Oct 14, 20265,411-24
Oct 09, 20265,435+27
Oct 08, 20265,408+18
Oct 07, 20265,3900
Oct 06, 20265,390-73
Oct 05, 20265,463+14
Oct 02, 20265,449No prior observation