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Contract OI history

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Nov 06, 2026 EXPIRATION

TSM $400.00 Put

TSM261106P00400000

Latest saved OI556Oct 23, 2026
Last change+33vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $400.00 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. 5562780 2026-10-02: 76 OI2026-10-05: 86 OI2026-10-06: 272 OI2026-10-07: 260 OI2026-10-08: 260 OI2026-10-09: 271 OI2026-10-14: 273 OI2026-10-15: 313 OI2026-10-16: 370 OI2026-10-21: 523 OI2026-10-23: 556 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, 2026Viewing556+33
Oct 21, 2026523+153
Oct 16, 2026370+57
Oct 15, 2026313+40
Oct 14, 2026273+2
Oct 09, 2026271+11
Oct 08, 20262600
Oct 07, 2026260-12
Oct 06, 2026272+186
Oct 05, 202686+10
Oct 02, 202676No prior observation