Core Insights - UnitedHealth shares have been declining since the CEO of its UnitedHealthcare unit was killed in New York City on December 4, contributing to the Dow Jones index's longest losing streak in 50 years [2][3] - The stock has lost 20% since December 4 and 7% since the start of the year, closing at 489.25aftera2.1460, where buying interest may emerge, and 430,whichcouldberevisitedifthestockclosesbelow460 [7] - Key resistance levels include 550,justabovethe50−weekmovingaverage,and610, where investors may look to lock in profits [8][9]