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Contract OI history

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Nov 20, 2026 EXPIRATION

TSM $420.00 Put

TSM261120P00420000

Latest saved OI5,588Oct 23, 2026
Last change+169vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $420.00 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. 5,5882,7940 2026-10-02: 3,073 OI2026-10-05: 3,312 OI2026-10-06: 3,178 OI2026-10-07: 3,204 OI2026-10-08: 3,204 OI2026-10-09: 4,330 OI2026-10-14: 4,373 OI2026-10-15: 4,958 OI2026-10-16: 5,341 OI2026-10-21: 5,419 OI2026-10-23: 5,588 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, 2026Viewing5,588+169
Oct 21, 20265,419+78
Oct 16, 20265,341+383
Oct 15, 20264,958+585
Oct 14, 20264,373+43
Oct 09, 20264,330+1,126
Oct 08, 20263,2040
Oct 07, 20263,204+26
Oct 06, 20263,178-134
Oct 05, 20263,312+239
Oct 02, 20263,073No prior observation