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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $490.00 Put

TSM261218P00490000

Latest saved OI315Oct 23, 2026
Last change+13vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $490.00 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. 3551770 2026-10-02: 98 OI2026-10-05: 193 OI2026-10-06: 299 OI2026-10-07: 332 OI2026-10-08: 332 OI2026-10-09: 355 OI2026-10-14: 310 OI2026-10-15: 310 OI2026-10-16: 309 OI2026-10-21: 302 OI2026-10-23: 315 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, 2026Viewing315+13
Oct 21, 2026302-7
Oct 16, 2026309-1
Oct 15, 20263100
Oct 14, 2026310-45
Oct 09, 2026355+23
Oct 08, 20263320
Oct 07, 2026332+33
Oct 06, 2026299+106
Oct 05, 2026193+95
Oct 02, 202698No prior observation