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Contract OI history

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Jan 15, 2027 EXPIRATION

TSM $400.00 Put

TSM270115P00400000

Latest saved OI19,833Oct 23, 2026
Last change+133vs 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. 19,8339,9160 2026-10-02: 7,455 OI2026-10-05: 7,484 OI2026-10-06: 7,322 OI2026-10-07: 7,444 OI2026-10-08: 7,444 OI2026-10-09: 7,479 OI2026-10-14: 7,662 OI2026-10-15: 15,745 OI2026-10-16: 16,231 OI2026-10-21: 19,700 OI2026-10-23: 19,833 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, 2026Viewing19,833+133
Oct 21, 202619,700+3,469
Oct 16, 202616,231+486
Oct 15, 202615,745+8,083
Oct 14, 20267,662+183
Oct 09, 20267,479+35
Oct 08, 20267,4440
Oct 07, 20267,444+122
Oct 06, 20267,322-162
Oct 05, 20267,484+29
Oct 02, 20267,455No prior observation