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Contract OI history

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Jun 16, 2028 EXPIRATION

TSM $420.00 Put

TSM280616P00420000

Latest saved OI116Oct 23, 2026
Last change+8vs 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. 116580 2026-10-02: 61 OI2026-10-05: 61 OI2026-10-06: 61 OI2026-10-07: 61 OI2026-10-08: 61 OI2026-10-09: 61 OI2026-10-14: 62 OI2026-10-15: 98 OI2026-10-16: 108 OI2026-10-21: 108 OI2026-10-23: 116 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, 2026Viewing116+8
Oct 21, 20261080
Oct 16, 2026108+10
Oct 15, 202698+36
Oct 14, 202662+1
Oct 09, 2026610
Oct 08, 2026610
Oct 07, 2026610
Oct 06, 2026610
Oct 05, 2026610
Oct 02, 202661No prior observation