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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $510.00 Put

TSM261218P00510000

Latest saved OI220Oct 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 $510.00 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. 2221110 2026-10-02: 115 OI2026-10-05: 115 OI2026-10-06: 115 OI2026-10-07: 115 OI2026-10-08: 115 OI2026-10-09: 146 OI2026-10-14: 220 OI2026-10-15: 221 OI2026-10-16: 222 OI2026-10-21: 222 OI2026-10-23: 220 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, 2026Viewing220-2
Oct 21, 20262220
Oct 16, 2026222+1
Oct 15, 2026221+1
Oct 14, 2026220+74
Oct 09, 2026146+31
Oct 08, 20261150
Oct 07, 20261150
Oct 06, 20261150
Oct 05, 20261150
Oct 02, 2026115No prior observation