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MENLO PARK, Calif. – Facebook is on a roll. The world’s largest online social network posted sharply higher earnings Wednesday as revenue from mobile advertising continued to grow, along with its user base.

The company’s shares climbed by nearly 4 percent in extended trading after the results came out, signaling that they could hit a record high when the stock market opens on Thursday.

Facebook said Wednesday that it earned $788 million, or 30 cents per share, in the April-June period. That’s up from $331 million, or 13 cents per share, in the same quarter a year ago. Adjusted earnings were 42 cents per share, handily beating Wall Street’s expectations of 33 cents.

Facebook’s revenue jumped by 61 percent to $2.91 billion, from $1.81 billion in the same quarter a year ago. Analysts expected $2.8 billion. This was the fifth quarter in a row that Facebook beat forecasts.

Advertising revenue jumped by 67 percent, to $2.68 billion. Mobile ad revenue, a closely watched figure, was 1.66 billion, or 62 percent of Facebook’s total advertising revenue for the quarter. In the first three months of the year, mobile ads accounted for 59 percent of Facebook’s total ad revenue.

The steady increase indicates that Facebook is succeeding in steering advertisers to its mobile platform.

Facebook had 1.32 billion active users at the end of June, up by 14 percent from a year earlier. On average, 829 million people used Facebook every day in June, up by 19 percent from a year earlier. The number of people who log in at least once a day on mobile devices was 654 million on average in June, up by 14 percent from a year earlier.

“We had a good second quarter,” CEO Mark Zuckerberg said. “Our community has continued to grow, and we see a lot of opportunity ahead as we connect the rest of the world.”

Facebook’s stock jumped by $2.77, or 3.9 percent, to $74.06 in extended trading after the results came out. The stock had closed up by $2.02 at $71.29.

The stock has more than doubled in the last 12 months.