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Contract OI history

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Dec 17, 2027 EXPIRATION

TSM $400.00 Put

TSM271217P00400000

Latest saved OI2,280Oct 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 $400.00 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. 2,3601,1800 2026-10-02: 2,352 OI2026-10-05: 2,359 OI2026-10-06: 2,360 OI2026-10-07: 2,279 OI2026-10-08: 2,279 OI2026-10-09: 2,282 OI2026-10-14: 2,283 OI2026-10-15: 2,281 OI2026-10-16: 2,288 OI2026-10-21: 2,279 OI2026-10-23: 2,280 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, 2026Viewing2,280+1
Oct 21, 20262,279-9
Oct 16, 20262,288+7
Oct 15, 20262,281-2
Oct 14, 20262,283+1
Oct 09, 20262,282+3
Oct 08, 20262,2790
Oct 07, 20262,279-81
Oct 06, 20262,360+1
Oct 05, 20262,359+7
Oct 02, 20262,352No prior observation