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Contract OI history

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Dec 18, 2026 EXPIRATION

TSM $380.00 Put

TSM261218P00380000

Latest saved OI4,338Oct 23, 2026
Last change+223vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $380.00 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. 4,3382,1690 2026-10-02: 2,578 OI2026-10-05: 2,501 OI2026-10-06: 2,375 OI2026-10-07: 2,383 OI2026-10-08: 2,383 OI2026-10-09: 2,414 OI2026-10-14: 2,572 OI2026-10-15: 3,420 OI2026-10-16: 4,063 OI2026-10-21: 4,115 OI2026-10-23: 4,338 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, 2026Viewing4,338+223
Oct 21, 20264,115+52
Oct 16, 20264,063+643
Oct 15, 20263,420+848
Oct 14, 20262,572+158
Oct 09, 20262,414+31
Oct 08, 20262,3830
Oct 07, 20262,383+8
Oct 06, 20262,375-126
Oct 05, 20262,501-77
Oct 02, 20262,578No prior observation