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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $155.00 Put

TSM261218P00155000

Latest saved OI354Oct 23, 2026
Last change-3vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $155.00 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. 3671830 2026-10-02: 367 OI2026-10-05: 367 OI2026-10-06: 366 OI2026-10-07: 345 OI2026-10-08: 345 OI2026-10-09: 348 OI2026-10-14: 348 OI2026-10-15: 346 OI2026-10-16: 344 OI2026-10-21: 357 OI2026-10-23: 354 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, 2026Viewing354-3
Oct 21, 2026357+13
Oct 16, 2026344-2
Oct 15, 2026346-2
Oct 14, 20263480
Oct 09, 2026348+3
Oct 08, 20263450
Oct 07, 2026345-21
Oct 06, 2026366-1
Oct 05, 20263670
Oct 02, 2026367No prior observation