Facebook revenue beats estimates as mobile ad sales surge

Facebook Inc reported a better-than-expected 51.9 per cent rise in quarterly revenue as its increasingly popular mobile app and push into live video continued to attract new advertisers and encouraged existing ones to boost spending.

The company's shares rose 5.8 per cent to $115.22 US in after-hours trading on Wednesday.

Mobile ad revenue accounted for about 82 per cent of total ad revenue in the first quarter ended March 31, compared with about 73 per cent a year earlier.

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Facebook said it had 1.65 billion monthly active users as of March 31, up from 1.44 billion a year earlier.

The company's net income attributable to common shareholders rose to $1.51 billion, or 52 cents per share, in the first quarter from $509 million, or 18 cents per share, a year earlier.

Excluding items, the company earned 77 cents per share.

Total revenue rose to $5.38 billion from $3.54 billion, with ad revenue increasing 56.8 per cent to $5.20 billion.

Analysts on average had expected a profit of 62 cents per share and revenue of $5.26 billion.

New share class

The company also said it planned to create a new class of non-voting capital stock, known as the Class C capital stock.

Facebook said the proposal was designed in part to encourage Chief Executive Mark Zuckerberg to remain in an "active leadership role" at the company.

If the proposal is approved, the company intends to issue two shares of Class C capital stock as a one-time stock dividend in respect of each outstanding share of its Class A and Class B common stock.

Facebook has been rolling out new features to ramp up mobile advertising, several of which encourage advertisers to experiment further with video and migrate to the platform from television advertising.