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Contract OI history

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Nov 20, 2026 EXPIRATION

TSM $407.50 Put

TSM261120P00407500

Latest saved OI296Oct 23, 2026
Last change+267vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $407.50 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 2961480 2026-10-21: 29 OI2026-10-23: 296 OI Oct 21, 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, 2026Viewing296+267
Oct 21, 202629No prior observation