Facebook (Nasdaq: FB) stock is up more than 9% in after-hours trading to $58.38 after comfortably beating analysts' expectations when it reported Q4 earnings Wednesday after the close.
The social networking giant posted earnings per share of $0.31, $0.04 better than forecasts. Revenue came in at $2.59 billion, also ahead of the $2.33 billion projected and up 63% year over year.
Mobile ads now account for more than half (53%) of revenue, up from 23% a year ago, and slightly ahead of Wall Street estimates.
What FB stock investors still want are answers to two huge questions...
Facebook (FB) Earnings: Watch the User Count
Multiple news reports have been telling us for months that teens are fleeing Facebook at a rapid rate for rival sites.
Digital consultancy iStrategy Labs released a study midmonth revealing just how many teens have bolted Facebook - and the numbers were ugly.
The social networking site currently has 4,292,080 fewer high-school-aged users and 6,948,848 fewer college-age student users than it did in 2011. That's more than 11 million users who have left in just two years' time.
A recent study from Piper Jaffray found that fewer teens say Facebook is "important to them." Just 23% of teens in the October 2013 study consider Facebook the most important site, a 42% decline from a year earlier.
We know from before how declining user data can weigh on FB shares... Word of teen defections overshadowed Facebook's impressive 2013 third quarter.
Shares originally jumped 15% to $52 after FB's earnings report showed a 60% increase in Q3 sales versus a loss in the same quarter a year ago. But the stock gave back all its gains and more, slipping to $46.50, after Ebersman's teen exodus comments came on the subsequent conference call.
And user count isn't FB investors' only question...