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Contract OI history

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Nov 27, 2026 EXPIRATION

TSM $400.00 Put

TSM261127P00400000

Latest saved OI527Oct 23, 2026
Last change+10vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $400.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5272630 2026-10-09: 19 OI2026-10-14: 74 OI2026-10-15: 129 OI2026-10-16: 315 OI2026-10-21: 517 OI2026-10-23: 527 OI Oct 09, 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, 2026Viewing527+10
Oct 21, 2026517+202
Oct 16, 2026315+186
Oct 15, 2026129+55
Oct 14, 202674+55
Oct 09, 202619No prior observation