The tech giant continued to benefit from booming iPhone sales during the June period, but it didn't sell as many as analysts had expected.
The social network finishes the week exactly where it started 14 months ago.
Facebook's flourishing mobile business serves as a catalyst for a bonkers week of trading that adds up to instant billions for the young CEO.
After a tumultuous year, the social network's blossoming mobile business has finally made believers out of skeptics.
The company shares are up nearly $7 in early trading after Facebook posted a strong quarter.
A strong second-quarter earnings report causes a pop that adds back 30 percent in value to Facebook's stock.
The company's second-quarter report shows Facebook continuing to slowly gain more users while increasing its mobile advertising dollars.
The social network performed better than expected on both revenue and earnings per share. It also closed the quarter with 1.15 billion monthly active users.
The average corporate venture-capital funding deal during the period was $17.8 million, easily topping the first quarter's $13 million figure.
The company added 1.1 million net new customers, but lost 101,000 contract subscribers as iPhones at Verizon Wireless and AT&T applied additional competitive pressure.