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Contract OI history

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Dec 15, 2028 EXPIRATION

TSM $400.00 Put

TSM281215P00400000

Latest saved OI722Oct 23, 2026
Last change-20vs 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. 7593790 2026-10-02: 759 OI2026-10-05: 759 OI2026-10-06: 756 OI2026-10-07: 585 OI2026-10-08: 585 OI2026-10-09: 596 OI2026-10-14: 596 OI2026-10-15: 595 OI2026-10-16: 593 OI2026-10-21: 742 OI2026-10-23: 722 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, 2026Viewing722-20
Oct 21, 2026742+149
Oct 16, 2026593-2
Oct 15, 2026595-1
Oct 14, 20265960
Oct 09, 2026596+11
Oct 08, 20265850
Oct 07, 2026585-171
Oct 06, 2026756-3
Oct 05, 20267590
Oct 02, 2026759No prior observation