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Contract OI history

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Dec 18, 2026 EXPIRATION

UNH $390.00 Put

UNH261218P00390000

Latest saved OI1,328Oct 23, 2026
Last change+49vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
UNH $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. 1,3286640 2026-10-02: 682 OI2026-10-05: 684 OI2026-10-06: 692 OI2026-10-07: 698 OI2026-10-08: 698 OI2026-10-09: 743 OI2026-10-14: 756 OI2026-10-15: 836 OI2026-10-16: 908 OI2026-10-21: 1,279 OI2026-10-23: 1,328 OI Oct 02, 2026Oct 23, 2026

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

UNH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,328+49
Oct 21, 20261,279+371
Oct 16, 2026908+72
Oct 15, 2026836+80
Oct 14, 2026756+13
Oct 09, 2026743+45
Oct 08, 20266980
Oct 07, 2026698+6
Oct 06, 2026692+8
Oct 05, 2026684+2
Oct 02, 2026682No prior observation