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Contract OI history

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Jun 17, 2027 EXPIRATION

TSM $420.00 Put

TSM270617P00420000

Latest saved OI1,251Oct 23, 2026
Last change+68vs 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. 1,2516250 2026-10-02: 966 OI2026-10-05: 1,011 OI2026-10-06: 1,122 OI2026-10-07: 1,130 OI2026-10-08: 1,130 OI2026-10-09: 1,147 OI2026-10-14: 1,155 OI2026-10-15: 1,155 OI2026-10-16: 1,158 OI2026-10-21: 1,183 OI2026-10-23: 1,251 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, 2026Viewing1,251+68
Oct 21, 20261,183+25
Oct 16, 20261,158+3
Oct 15, 20261,1550
Oct 14, 20261,155+8
Oct 09, 20261,147+17
Oct 08, 20261,1300
Oct 07, 20261,130+8
Oct 06, 20261,122+111
Oct 05, 20261,011+45
Oct 02, 2026966No prior observation