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Contract OI history

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Jan 15, 2027 EXPIRATION

TSM $420.00 Put

TSM270115P00420000

Latest saved OI14,760Oct 23, 2026
Last change+1,346vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $420.00 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. 14,7607,3800 2026-10-02: 12,960 OI2026-10-05: 12,951 OI2026-10-06: 12,938 OI2026-10-07: 12,875 OI2026-10-08: 12,875 OI2026-10-09: 12,900 OI2026-10-14: 12,939 OI2026-10-15: 12,974 OI2026-10-16: 13,030 OI2026-10-21: 13,414 OI2026-10-23: 14,760 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, 2026Viewing14,760+1,346
Oct 21, 202613,414+384
Oct 16, 202613,030+56
Oct 15, 202612,974+35
Oct 14, 202612,939+39
Oct 09, 202612,900+25
Oct 08, 202612,8750
Oct 07, 202612,875-63
Oct 06, 202612,938-13
Oct 05, 202612,951-9
Oct 02, 202612,960No prior observation