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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $270.00 Put

TSM261218P00270000

Latest saved OI3,265Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $270.00 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. 3,2651,6320 2026-10-02: 3,242 OI2026-10-05: 3,245 OI2026-10-06: 3,247 OI2026-10-07: 3,247 OI2026-10-08: 3,247 OI2026-10-09: 3,248 OI2026-10-14: 3,249 OI2026-10-15: 3,251 OI2026-10-16: 3,260 OI2026-10-21: 3,265 OI2026-10-23: 3,265 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, 2026Viewing3,2650
Oct 21, 20263,265+5
Oct 16, 20263,260+9
Oct 15, 20263,251+2
Oct 14, 20263,249+1
Oct 09, 20263,248+1
Oct 08, 20263,2470
Oct 07, 20263,2470
Oct 06, 20263,247+2
Oct 05, 20263,245+3
Oct 02, 20263,242No prior observation