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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $185.00 Put

TSM261218P00185000

Latest saved OI754Oct 23, 2026
Last change-1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $185.00 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. 7563780 2026-10-02: 749 OI2026-10-05: 750 OI2026-10-06: 750 OI2026-10-07: 752 OI2026-10-08: 752 OI2026-10-09: 752 OI2026-10-14: 752 OI2026-10-15: 753 OI2026-10-16: 756 OI2026-10-21: 755 OI2026-10-23: 754 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, 2026Viewing754-1
Oct 21, 2026755-1
Oct 16, 2026756+3
Oct 15, 2026753+1
Oct 14, 20267520
Oct 09, 20267520
Oct 08, 20267520
Oct 07, 2026752+2
Oct 06, 20267500
Oct 05, 2026750+1
Oct 02, 2026749No prior observation