OITracker Cboe delayed data

Contract OI history

Back to TSM

Dec 18, 2026 EXPIRATION

TSM $390.00 Put

TSM261218P00390000

Latest saved OI4,241Oct 23, 2026
Last change-14vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $390.00 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. 4,2552,1270 2026-10-02: 2,762 OI2026-10-05: 2,744 OI2026-10-06: 2,420 OI2026-10-07: 2,447 OI2026-10-08: 2,447 OI2026-10-09: 2,483 OI2026-10-14: 3,002 OI2026-10-15: 3,020 OI2026-10-16: 3,100 OI2026-10-21: 4,255 OI2026-10-23: 4,241 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, 2026Viewing4,241-14
Oct 21, 20264,255+1,155
Oct 16, 20263,100+80
Oct 15, 20263,020+18
Oct 14, 20263,002+519
Oct 09, 20262,483+36
Oct 08, 20262,4470
Oct 07, 20262,447+27
Oct 06, 20262,420-324
Oct 05, 20262,744-18
Oct 02, 20262,762No prior observation