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Contract OI history

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Jan 21, 2028 EXPIRATION

TSM $380.00 Put

TSM280121P00380000

Latest saved OI899Oct 23, 2026
Last change-1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $380.00 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. 9004500 2026-10-02: 383 OI2026-10-05: 381 OI2026-10-06: 474 OI2026-10-07: 474 OI2026-10-08: 474 OI2026-10-09: 477 OI2026-10-14: 477 OI2026-10-15: 489 OI2026-10-16: 494 OI2026-10-21: 900 OI2026-10-23: 899 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, 2026Viewing899-1
Oct 21, 2026900+406
Oct 16, 2026494+5
Oct 15, 2026489+12
Oct 14, 20264770
Oct 09, 2026477+3
Oct 08, 20264740
Oct 07, 20264740
Oct 06, 2026474+93
Oct 05, 2026381-2
Oct 02, 2026383No prior observation