SAN FRANCISCO (Reuters) - Facebook Inc warned on Tuesday of a dramatic increase in spending in 2015 and projected a slowdown in revenue growth this quarter, slicing a tenth off its market value.
Chief Financial Officer Dave Wehner told analysts on a conference call that the social network is preparing for a 55 per cent to 75 per cent spike in expenses next year, when the world's largest social network intends to invest in Whatsapp, Oculus and other products that have yet to show a profit.
Wehner forecast revenue growth of 40 per cent to 47 per cent in the final quarter of 2014. That's down sharply from 59 per cent in the third quarter.
"We're investing where we think there's a great opportunity for long term growth," Wehner said. "So we're investing in the people," as well as in existing and newly-acquired products, he said.
Facebook reported a better-than-expected 59 per cent jump in third-quarter revenue and a solid gain in its user base that's already the world's largest social media community. The company is considered a pioneer in mobile advertising, outshining rivals like Twitter, which are struggling to sustain user engagement and growth.
Shares of Facebook, up roughly 47 per cent this year, slid more than 10 per cent to US$72.65 in extended trading on Tuesday.
Facebook also for the first time disclosed the financial performance for WhatsApp, a mobile messaging app that the company acquired earlier this month for US$22 billion.
According to a filing with the Securities and Exchange Commission on Tuesday, WhatsApp lost US$232.5 million in the first six months of 2014, compared to a loss of US$58.8 million in the first six months of 2013.
WhatsApp does not currently show ads on its service and Facebook Chief Executive Mark Zuckerberg has said the company will not rush to monetize the service.
The world's No.1 online social network said its total number of monthly users reached 1.35 billion in the third quarter, with 864 million users accessing the service every day.
Facebook's net income increased to US$806 million, or 30 cents a share in the third quarter, compared to US$425 million, or 17 cents a share in the year-ago period. Excluding certain items, Facebook said it earned 43 cents a share.
Mobile ads represented 66 per cent of Facebook's advertising revenue, up from 49 per cent of ad revenue in the year-ago period.