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Contract OI history

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Jun 17, 2027 EXPIRATION

TSM $400.00 Put

TSM270617P00400000

Latest saved OI2,423Oct 23, 2026
Last change+189vs 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. 2,5361,2680 2026-10-02: 2,177 OI2026-10-05: 2,183 OI2026-10-06: 2,505 OI2026-10-07: 2,510 OI2026-10-08: 2,510 OI2026-10-09: 2,523 OI2026-10-14: 2,536 OI2026-10-15: 2,099 OI2026-10-16: 2,116 OI2026-10-21: 2,234 OI2026-10-23: 2,423 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, 2026Viewing2,423+189
Oct 21, 20262,234+118
Oct 16, 20262,116+17
Oct 15, 20262,099-437
Oct 14, 20262,536+13
Oct 09, 20262,523+13
Oct 08, 20262,5100
Oct 07, 20262,510+5
Oct 06, 20262,505+322
Oct 05, 20262,183+6
Oct 02, 20262,177No prior observation