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Contract OI history

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Sep 17, 2027 EXPIRATION

TSM $400.00 Put

TSM270917P00400000

Latest saved OI8,591Oct 23, 2026
Last change+145vs 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. 8,5914,2950 2026-10-02: 7,734 OI2026-10-05: 7,614 OI2026-10-06: 7,662 OI2026-10-07: 7,668 OI2026-10-08: 7,668 OI2026-10-09: 7,674 OI2026-10-14: 7,706 OI2026-10-15: 8,133 OI2026-10-16: 8,445 OI2026-10-21: 8,446 OI2026-10-23: 8,591 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, 2026Viewing8,591+145
Oct 21, 20268,446+1
Oct 16, 20268,445+312
Oct 15, 20268,133+427
Oct 14, 20267,706+32
Oct 09, 20267,674+6
Oct 08, 20267,6680
Oct 07, 20267,668+6
Oct 06, 20267,662+48
Oct 05, 20267,614-120
Oct 02, 20267,734No prior observation