Morning Movers: Stocks Slip On GDP News; MasterCard, Visa Biogen Jump

Stocks were lower before the open Friday, reversing Thursday’s optimism, after slower than expected GDP growth. The economy expanded 2.6% in the fourth quarter, below the 3.2% that economists were predicting. The figure marks a slowdown from the second and third quarter, which saw 4.6% and 5% growth, respectively, although 2014 did start out in [...]