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Contract OI history

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Oct 23, 2026 EXPIRATION

TSM $255.00 Put

TSM261023P00255000

Latest saved OI107Oct 23, 2026
Last change-101vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $255.00 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. 2081040 2026-10-02: 78 OI2026-10-05: 78 OI2026-10-06: 78 OI2026-10-07: 78 OI2026-10-08: 78 OI2026-10-09: 78 OI2026-10-14: 78 OI2026-10-15: 78 OI2026-10-16: 78 OI2026-10-21: 208 OI2026-10-23: 107 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, 2026Viewing107-101
Oct 21, 2026208+130
Oct 16, 2026780
Oct 15, 2026780
Oct 14, 2026780
Oct 09, 2026780
Oct 08, 2026780
Oct 07, 2026780
Oct 06, 2026780
Oct 05, 2026780
Oct 02, 202678No prior observation