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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $540.00 Put

TSM261218P00540000

Latest saved OI1Oct 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 $540.00 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. 3041520 2026-10-02: 290 OI2026-10-05: 290 OI2026-10-06: 301 OI2026-10-07: 302 OI2026-10-08: 302 OI2026-10-09: 304 OI2026-10-14: 304 OI2026-10-15: 304 OI2026-10-16: 1 OI2026-10-21: 1 OI2026-10-23: 1 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, 2026Viewing10
Oct 21, 202610
Oct 16, 20261-303
Oct 15, 20263040
Oct 14, 20263040
Oct 09, 2026304+2
Oct 08, 20263020
Oct 07, 2026302+1
Oct 06, 2026301+11
Oct 05, 20262900
Oct 02, 2026290No prior observation