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Contract OI history

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Dec 15, 2028 EXPIRATION

TSM $340.00 Put

TSM281215P00340000

Latest saved OI379Oct 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 $340.00 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. 3791890 2026-10-02: 353 OI2026-10-05: 353 OI2026-10-06: 353 OI2026-10-07: 353 OI2026-10-08: 353 OI2026-10-09: 374 OI2026-10-14: 374 OI2026-10-15: 374 OI2026-10-16: 374 OI2026-10-21: 377 OI2026-10-23: 379 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, 2026Viewing379+2
Oct 21, 2026377+3
Oct 16, 20263740
Oct 15, 20263740
Oct 14, 20263740
Oct 09, 2026374+21
Oct 08, 20263530
Oct 07, 20263530
Oct 06, 20263530
Oct 05, 20263530
Oct 02, 2026353No prior observation