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Contract OI history

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Oct 30, 2026 EXPIRATION

TSM $390.00 Put

TSM261030P00390000

Latest saved OI891Oct 23, 2026
Last change+203vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $390.00 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. 8914450 2026-10-02: 342 OI2026-10-05: 338 OI2026-10-06: 321 OI2026-10-07: 319 OI2026-10-08: 319 OI2026-10-09: 334 OI2026-10-14: 340 OI2026-10-15: 464 OI2026-10-16: 633 OI2026-10-21: 688 OI2026-10-23: 891 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, 2026Viewing891+203
Oct 21, 2026688+55
Oct 16, 2026633+169
Oct 15, 2026464+124
Oct 14, 2026340+6
Oct 09, 2026334+15
Oct 08, 20263190
Oct 07, 2026319-2
Oct 06, 2026321-17
Oct 05, 2026338-4
Oct 02, 2026342No prior observation