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Contract OI history

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Jun 16, 2028 EXPIRATION

TSM $400.00 Put

TSM280616P00400000

Latest saved OI861Oct 23, 2026
Last change+44vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $400.00 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. 8614300 2026-10-02: 820 OI2026-10-05: 820 OI2026-10-06: 820 OI2026-10-07: 820 OI2026-10-08: 820 OI2026-10-09: 820 OI2026-10-14: 818 OI2026-10-15: 818 OI2026-10-16: 821 OI2026-10-21: 817 OI2026-10-23: 861 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, 2026Viewing861+44
Oct 21, 2026817-4
Oct 16, 2026821+3
Oct 15, 20268180
Oct 14, 2026818-2
Oct 09, 20268200
Oct 08, 20268200
Oct 07, 20268200
Oct 06, 20268200
Oct 05, 20268200
Oct 02, 2026820No prior observation