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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $280.00 Put

TSM261218P00280000

Latest saved OI2,372Oct 23, 2026
Last change+34vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $280.00 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. 2,3721,1860 2026-10-02: 2,327 OI2026-10-05: 2,328 OI2026-10-06: 2,323 OI2026-10-07: 2,325 OI2026-10-08: 2,325 OI2026-10-09: 2,325 OI2026-10-14: 2,325 OI2026-10-15: 2,328 OI2026-10-16: 2,328 OI2026-10-21: 2,338 OI2026-10-23: 2,372 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, 2026Viewing2,372+34
Oct 21, 20262,338+10
Oct 16, 20262,3280
Oct 15, 20262,328+3
Oct 14, 20262,3250
Oct 09, 20262,3250
Oct 08, 20262,3250
Oct 07, 20262,325+2
Oct 06, 20262,323-5
Oct 05, 20262,328+1
Oct 02, 20262,327No prior observation