Yahoo (YHOO -2.4%) has given up the initial gains it saw following its Q4 EPS beat (fueled by...

|By:, SA News Editor

Yahoo (YHOO -2.4%) has given up the initial gains it saw following its Q4 EPS beat (fueled by $1.5B worth of buybacks), which was accompanied by somewhat light top-line guidance. Marissa Mayer's earnings call remarks about improving Yahoo's UI, revamping search (previous), and improving the company's reach were generally well-received. But she also admitted big investments will be needed to turn the company around, and that the mobile shift is having some effect on display ad sales.