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Contract OI history

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Oct 30, 2026 EXPIRATION

TSM $427.50 Put

TSM261030P00427500

Latest saved OI336Oct 23, 2026
Last change+163vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $427.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3361680 2026-10-09: 0 OI2026-10-14: 36 OI2026-10-15: 45 OI2026-10-16: 60 OI2026-10-21: 173 OI2026-10-23: 336 OI Oct 09, 2026Oct 23, 2026

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

TSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing336+163
Oct 21, 2026173+113
Oct 16, 202660+15
Oct 15, 202645+9
Oct 14, 202636+36
Oct 09, 20260No prior observation