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Contract OI history

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Jan 21, 2028 EXPIRATION

TSM $420.00 Put

TSM280121P00420000

Latest saved OI936Oct 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 $420.00 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. 9364680 2026-10-02: 830 OI2026-10-05: 830 OI2026-10-06: 835 OI2026-10-07: 835 OI2026-10-08: 835 OI2026-10-09: 836 OI2026-10-14: 925 OI2026-10-15: 927 OI2026-10-16: 924 OI2026-10-21: 936 OI2026-10-23: 936 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, 2026Viewing9360
Oct 21, 2026936+12
Oct 16, 2026924-3
Oct 15, 2026927+2
Oct 14, 2026925+89
Oct 09, 2026836+1
Oct 08, 20268350
Oct 07, 20268350
Oct 06, 2026835+5
Oct 05, 20268300
Oct 02, 2026830No prior observation