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Contract OI history

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Jan 21, 2028 EXPIRATION

TSM $320.00 Put

TSM280121P00320000

Latest saved OI782Oct 23, 2026
Last change+2vs 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. 9054520 2026-10-02: 900 OI2026-10-05: 905 OI2026-10-06: 776 OI2026-10-07: 777 OI2026-10-08: 777 OI2026-10-09: 779 OI2026-10-14: 778 OI2026-10-15: 778 OI2026-10-16: 778 OI2026-10-21: 780 OI2026-10-23: 782 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, 2026Viewing782+2
Oct 21, 2026780+2
Oct 16, 20267780
Oct 15, 20267780
Oct 14, 2026778-1
Oct 09, 2026779+2
Oct 08, 20267770
Oct 07, 2026777+1
Oct 06, 2026776-129
Oct 05, 2026905+5
Oct 02, 2026900No prior observation