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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $320.00 Put

TSM261218P00320000

Latest saved OI10,760Oct 23, 2026
Last change+8vs 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. 10,7605,3800 2026-10-02: 9,626 OI2026-10-05: 9,636 OI2026-10-06: 9,553 OI2026-10-07: 9,646 OI2026-10-08: 9,646 OI2026-10-09: 9,639 OI2026-10-14: 9,623 OI2026-10-15: 9,639 OI2026-10-16: 10,686 OI2026-10-21: 10,752 OI2026-10-23: 10,760 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, 2026Viewing10,760+8
Oct 21, 202610,752+66
Oct 16, 202610,686+1,047
Oct 15, 20269,639+16
Oct 14, 20269,623-16
Oct 09, 20269,639-7
Oct 08, 20269,6460
Oct 07, 20269,646+93
Oct 06, 20269,553-83
Oct 05, 20269,636+10
Oct 02, 20269,626No prior observation