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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $230.00 Put

TSM261218P00230000

Latest saved OI2,721Oct 23, 2026
Last change+5vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $230.00 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. 2,8331,4160 2026-10-02: 2,833 OI2026-10-05: 2,833 OI2026-10-06: 2,719 OI2026-10-07: 2,719 OI2026-10-08: 2,719 OI2026-10-09: 2,717 OI2026-10-14: 2,717 OI2026-10-15: 2,716 OI2026-10-16: 2,716 OI2026-10-21: 2,716 OI2026-10-23: 2,721 OI Oct 02, 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, 2026Viewing2,721+5
Oct 21, 20262,7160
Oct 16, 20262,7160
Oct 15, 20262,716-1
Oct 14, 20262,7170
Oct 09, 20262,717-2
Oct 08, 20262,7190
Oct 07, 20262,7190
Oct 06, 20262,719-114
Oct 05, 20262,8330
Oct 02, 20262,833No prior observation