[video] Quick Take: U.S. Markets Open Higher, FireEye Buys Mandiant for $1B

Tickers in this article: F FEYE GM GRPN

NEW YORK (TheStreet) -- Investors are finding optimism in Thursday's selloff, pushing indices higher in Friday's trading session. TheStreet's Ruben Ramirez details today's top headlines. 

FireEye is soaring, up over 30%, on reports that it will acquire Mandiant for $1 billion. The acquisition should help broaden the company's reach in defending companies and government enterprises from hackers, Ramirez said. 

Turning to the auto sector, monthly sales figures are due out Friday morning. According to Edmonds.com, auto sales as a whole should increase 5.2% for the month of December, he added. 

General Motors missed consensus expectations of a 1.5% gain, with a drop of 6.3%. Chrysler boosted sales by 5.7% and Ford posted a gain of just 1.7%, with both results missing estimates. 

Finally, Ramirez reported that LivingSocial will sell 13.8 million shares of Groupon , and plans to use to proceeds to stabilize its business. 

Groupon purchased LivingSocial's Ticket Monster in November for $260 million in cash and stock. Shares of GRPN are currently lower by roughly 1%.

-- Written by Bret Kenwell in Petoskey, Mich.