A.M. Update

S&P 500 (+0.05%) and Nasdaq 100 futures (+0.35%) are higher while futures linked to the Dow industrials (-0.6%) move down, clipped by a pre-open decline in UnitedHealth (UNH), the averages second most heavily weighted component. Shares of UNH are -12.6% lower in premarket trading on news of a Department of Justice civil investigation of Medicare…