Day trading is the strategy employed by investors who play hot potato with stocks — buying, selling and closing their positions of the same stock in a single trading day, caring little about the inner workings of the underlying businesses. (Position refers to the amount of a particular stock or fund you own.) The aim of the day trader is to make a few bucks in the next few minutes, hours or days based on daily price fluctuations.
UnitedHealth Group said Friday that Dirk C. McMahon, currently president and chief operating officer of Optum, would become CEO of its UnitedHealthcare division. McMahon replaces Steve Nelson, who is retiring from UnitedHealthcare. The nation's largest health insurer also said Daniel J. Schumacher, currently president and chief operating officer of UnitedHealthcare, was named president and chief operating officer of Optum, the company's health-services arm.