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Contract OI history

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Apr 16, 2027 EXPIRATION

TSM $400.00 Put

TSM270416P00400000

Latest saved OI1,671Oct 23, 2026
Last change+4vs 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. 1,6718350 2026-10-02: 738 OI2026-10-05: 707 OI2026-10-06: 731 OI2026-10-07: 732 OI2026-10-08: 732 OI2026-10-09: 734 OI2026-10-14: 740 OI2026-10-15: 1,541 OI2026-10-16: 1,629 OI2026-10-21: 1,667 OI2026-10-23: 1,671 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, 2026Viewing1,671+4
Oct 21, 20261,667+38
Oct 16, 20261,629+88
Oct 15, 20261,541+801
Oct 14, 2026740+6
Oct 09, 2026734+2
Oct 08, 20267320
Oct 07, 2026732+1
Oct 06, 2026731+24
Oct 05, 2026707-31
Oct 02, 2026738No prior observation