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Contract OI history

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Jan 21, 2028 EXPIRATION

TSM $390.00 Put

TSM280121P00390000

Latest saved OI1,000Oct 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 $390.00 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. 1,0005000 2026-10-02: 929 OI2026-10-05: 929 OI2026-10-06: 924 OI2026-10-07: 924 OI2026-10-08: 924 OI2026-10-09: 940 OI2026-10-14: 940 OI2026-10-15: 938 OI2026-10-16: 938 OI2026-10-21: 998 OI2026-10-23: 1,000 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, 2026Viewing1,000+2
Oct 21, 2026998+60
Oct 16, 20269380
Oct 15, 2026938-2
Oct 14, 20269400
Oct 09, 2026940+16
Oct 08, 20269240
Oct 07, 20269240
Oct 06, 2026924-5
Oct 05, 20269290
Oct 02, 2026929No prior observation