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Contract OI history

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Mar 19, 2027 EXPIRATION

TSM $400.00 Put

TSM270319P00400000

Latest saved OI3,151Oct 23, 2026
Last change+2vs 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. 3,1511,5750 2026-10-02: 2,404 OI2026-10-05: 2,432 OI2026-10-06: 2,426 OI2026-10-07: 2,436 OI2026-10-08: 2,436 OI2026-10-09: 2,383 OI2026-10-14: 2,401 OI2026-10-15: 2,369 OI2026-10-16: 2,861 OI2026-10-21: 3,149 OI2026-10-23: 3,151 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, 2026Viewing3,151+2
Oct 21, 20263,149+288
Oct 16, 20262,861+492
Oct 15, 20262,369-32
Oct 14, 20262,401+18
Oct 09, 20262,383-53
Oct 08, 20262,4360
Oct 07, 20262,436+10
Oct 06, 20262,426-6
Oct 05, 20262,432+28
Oct 02, 20262,404No prior observation