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Oct 23, 2026 EXPIRATION

TSM $405.00 Put

TSM261023P00405000

Latest saved OI1,350Oct 23, 2026
Last change+494vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $405.00 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. 1,3506750 2026-10-02: 201 OI2026-10-05: 178 OI2026-10-06: 159 OI2026-10-07: 151 OI2026-10-08: 151 OI2026-10-09: 176 OI2026-10-14: 247 OI2026-10-15: 316 OI2026-10-16: 459 OI2026-10-21: 856 OI2026-10-23: 1,350 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, 2026Viewing1,350+494
Oct 21, 2026856+397
Oct 16, 2026459+143
Oct 15, 2026316+69
Oct 14, 2026247+71
Oct 09, 2026176+25
Oct 08, 20261510
Oct 07, 2026151-8
Oct 06, 2026159-19
Oct 05, 2026178-23
Oct 02, 2026201No prior observation