Google's fourth quarter revenue climbed 25 percent from a year earlier but was less than analysts had expected, pulling its stock price down 9 percent in after-hours trading on Thursday.
Google's revenue for the three months to December 31 came in at $10.58 billion (£6.7 billion), up from $8.44 billion a year earlier, the company announced. Subtracting commissions and fees paid to partners, revenue was $8.13 billion, below the consensus analyst forecast of $8.41 billion, according to Thomson Reuters.
The company's stock price had dipped more than 9 percent at the time of this report, to $580.91, as investors reacted to the news. Earlier in the day, its stock ended regular trading at $639.57, up 1 percent.
Google's net income for the quarter was $2.71 billion (£1.75 billion), the company said, up from $2.54 billion in the fourth quarter last year. CEO Larry Page was upbeat, saying "Google had a really strong quarter ending a great year".
It's Google+ social networking service now has 90 million users, he said, up from about 40 million when Google reported its third quarter results a few months ago.