Morning Movers: UnitedHealth Jumps on Catamaran Purchase; Linn Energy Drops on Downgrade

Stocks will look to make back some of their losses today after getting hammered last week. AP S&P 500 futures have gained 0.5%, while Dow Jones Industrial Average futures have risen 0.7%. Nasdaq Composite futures have advanced 0.6%. UnitedHealth Group (UNH) has jumped 3.8% to $122.50 after the health-insurance giant agreed to buy benefits manager Catamaran [...]