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Contract OI history

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Dec 15, 2028 EXPIRATION

TSM $320.00 Put

TSM281215P00320000

Latest saved OI188Oct 23, 2026
Last change+1vs 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. 197980 2026-10-02: 190 OI2026-10-05: 190 OI2026-10-06: 191 OI2026-10-07: 191 OI2026-10-08: 191 OI2026-10-09: 193 OI2026-10-14: 193 OI2026-10-15: 196 OI2026-10-16: 197 OI2026-10-21: 187 OI2026-10-23: 188 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, 2026Viewing188+1
Oct 21, 2026187-10
Oct 16, 2026197+1
Oct 15, 2026196+3
Oct 14, 20261930
Oct 09, 2026193+2
Oct 08, 20261910
Oct 07, 20261910
Oct 06, 2026191+1
Oct 05, 20261900
Oct 02, 2026190No prior observation