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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $145.00 Put

TSM261218P00145000

Latest saved OI257Oct 23, 2026
Last change+2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $145.00 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. 2571280 2026-10-02: 254 OI2026-10-05: 254 OI2026-10-06: 255 OI2026-10-07: 255 OI2026-10-08: 255 OI2026-10-09: 255 OI2026-10-14: 256 OI2026-10-15: 255 OI2026-10-16: 255 OI2026-10-21: 255 OI2026-10-23: 257 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, 2026Viewing257+2
Oct 21, 20262550
Oct 16, 20262550
Oct 15, 2026255-1
Oct 14, 2026256+1
Oct 09, 20262550
Oct 08, 20262550
Oct 07, 20262550
Oct 06, 2026255+1
Oct 05, 20262540
Oct 02, 2026254No prior observation