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Contract OI history

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Jan 21, 2028 EXPIRATION

UMC $8.00 Put

UMC280121P00008000

Latest saved OI673Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UMC $8.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6733360 2026-10-02: 669 OI2026-10-05: 669 OI2026-10-06: 669 OI2026-10-07: 669 OI2026-10-08: 669 OI2026-10-09: 668 OI2026-10-13: 668 OI2026-10-14: 668 OI2026-10-15: 668 OI2026-10-16: 668 OI2026-10-21: 670 OI2026-10-23: 673 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

UMC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing673+3
Oct 21, 2026670+2
Oct 16, 20266680
Oct 15, 20266680
Oct 14, 20266680
Oct 13, 20266680
Oct 09, 2026668-1
Oct 08, 20266690
Oct 07, 20266690
Oct 06, 20266690
Oct 05, 20266690
Oct 02, 2026669No prior observation