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Contract OI history

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Oct 23, 2026 EXPIRATION

TSM $427.50 Put

TSM261023P00427500

Latest saved OI672Oct 23, 2026
Last change+244vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $427.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6723360 2026-10-09: 0 OI2026-10-14: 266 OI2026-10-15: 382 OI2026-10-16: 411 OI2026-10-21: 428 OI2026-10-23: 672 OI Oct 09, 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, 2026Viewing672+244
Oct 21, 2026428+17
Oct 16, 2026411+29
Oct 15, 2026382+116
Oct 14, 2026266+266
Oct 09, 20260No prior observation