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Contract OI history

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Nov 13, 2026 EXPIRATION

TSM $420.00 Put

TSM261113P00420000

Latest saved OI598Oct 23, 2026
Last change+196vs 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. 5982990 2026-10-02: 1 OI2026-10-05: 80 OI2026-10-06: 117 OI2026-10-07: 122 OI2026-10-08: 122 OI2026-10-09: 169 OI2026-10-14: 215 OI2026-10-15: 230 OI2026-10-16: 327 OI2026-10-21: 402 OI2026-10-23: 598 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, 2026Viewing598+196
Oct 21, 2026402+75
Oct 16, 2026327+97
Oct 15, 2026230+15
Oct 14, 2026215+46
Oct 09, 2026169+47
Oct 08, 20261220
Oct 07, 2026122+5
Oct 06, 2026117+37
Oct 05, 202680+79
Oct 02, 20261No prior observation