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Contract OI history

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Oct 30, 2026 EXPIRATION

TSM $387.50 Put

TSM261030P00387500

Latest saved OI209Oct 23, 2026
Last change+184vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $387.50 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. 2091040 2026-10-21: 25 OI2026-10-23: 209 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, 2026Viewing209+184
Oct 21, 202625No prior observation