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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $170.00 Put

TSM261218P00170000

Latest saved OI2,427Oct 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 $170.00 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. 2,4301,2150 2026-10-02: 2,421 OI2026-10-05: 2,421 OI2026-10-06: 2,423 OI2026-10-07: 2,428 OI2026-10-08: 2,428 OI2026-10-09: 2,430 OI2026-10-14: 2,430 OI2026-10-15: 2,422 OI2026-10-16: 2,422 OI2026-10-21: 2,422 OI2026-10-23: 2,427 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, 2026Viewing2,427+5
Oct 21, 20262,4220
Oct 16, 20262,4220
Oct 15, 20262,422-8
Oct 14, 20262,4300
Oct 09, 20262,430+2
Oct 08, 20262,4280
Oct 07, 20262,428+5
Oct 06, 20262,423+2
Oct 05, 20262,4210
Oct 02, 20262,421No prior observation