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Contract OI history

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Oct 30, 2026 EXPIRATION

TSM $400.00 Put

TSM261030P00400000

Latest saved OI2,513Oct 23, 2026
Last change+481vs 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. 2,5131,2560 2026-10-02: 581 OI2026-10-05: 644 OI2026-10-06: 503 OI2026-10-07: 521 OI2026-10-08: 521 OI2026-10-09: 546 OI2026-10-14: 772 OI2026-10-15: 725 OI2026-10-16: 1,134 OI2026-10-21: 2,032 OI2026-10-23: 2,513 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, 2026Viewing2,513+481
Oct 21, 20262,032+898
Oct 16, 20261,134+409
Oct 15, 2026725-47
Oct 14, 2026772+226
Oct 09, 2026546+25
Oct 08, 20265210
Oct 07, 2026521+18
Oct 06, 2026503-141
Oct 05, 2026644+63
Oct 02, 2026581No prior observation