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Contract OI history

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Oct 30, 2026 EXPIRATION

TSM $320.00 Put

TSM261030P00320000

Latest saved OI580Oct 23, 2026
Last change+304vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $320.00 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. 5802900 2026-10-02: 29 OI2026-10-05: 28 OI2026-10-06: 260 OI2026-10-07: 260 OI2026-10-08: 260 OI2026-10-09: 260 OI2026-10-14: 260 OI2026-10-15: 264 OI2026-10-16: 264 OI2026-10-21: 276 OI2026-10-23: 580 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, 2026Viewing580+304
Oct 21, 2026276+12
Oct 16, 20262640
Oct 15, 2026264+4
Oct 14, 20262600
Oct 09, 20262600
Oct 08, 20262600
Oct 07, 20262600
Oct 06, 2026260+232
Oct 05, 202628-1
Oct 02, 202629No prior observation