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Contract OI history

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Oct 30, 2026 EXPIRATION

T $21.50 Put

T261030P00021500

Latest saved OI896Oct 23, 2026
Last change+496vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $21.50 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. 8964480 2026-10-02: 8 OI2026-10-05: 9 OI2026-10-06: 31 OI2026-10-07: 31 OI2026-10-08: 31 OI2026-10-09: 139 OI2026-10-14: 276 OI2026-10-15: 276 OI2026-10-16: 270 OI2026-10-21: 400 OI2026-10-23: 896 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, 2026Viewing896+496
Oct 21, 2026400+130
Oct 16, 2026270-6
Oct 15, 20262760
Oct 14, 2026276+137
Oct 09, 2026139+108
Oct 08, 2026310
Oct 07, 2026310
Oct 06, 202631+22
Oct 05, 20269+1
Oct 02, 20268No prior observation