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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $340.00 Put

TSM261218P00340000

Latest saved OI5,381Oct 23, 2026
Last change+31vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $340.00 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. 5,3812,6900 2026-10-02: 5,269 OI2026-10-05: 5,263 OI2026-10-06: 5,241 OI2026-10-07: 5,241 OI2026-10-08: 5,241 OI2026-10-09: 5,298 OI2026-10-14: 5,219 OI2026-10-15: 5,221 OI2026-10-16: 5,186 OI2026-10-21: 5,350 OI2026-10-23: 5,381 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, 2026Viewing5,381+31
Oct 21, 20265,350+164
Oct 16, 20265,186-35
Oct 15, 20265,221+2
Oct 14, 20265,219-79
Oct 09, 20265,298+57
Oct 08, 20265,2410
Oct 07, 20265,2410
Oct 06, 20265,241-22
Oct 05, 20265,263-6
Oct 02, 20265,269No prior observation