Bolstered by Holiday Budgets, Facebook’s Ad Revenue Hit $5.6 Billion in Q4

80% came from mobile

Facebook brought in $5.6 billion in ad sales during the fourth quarter of 2015, a 57 percent year-over-year increase, the social network revealed in its earnings report today. Eighty percent of Facebook's quarterly ad revenue, or $4.5 billion, came from mobile, up from 69 percent in 2014.

@laurenjohnson Lauren Johnson is a senior technology editor for Adweek, where she specializes in covering mobile, social platforms and emerging tech.