Amazon.com posted quarterly results that fell short of expectations and handed in a weak revenue outlook on Thursday, sending shares sharply lower in extended-hours trading.
Stock in the world's largest Internet retailer was more than 12 percent lower at $353 after the Nasdaq's closing bell. It had risen nearly 5 percent during regular trading.
Amazon posted fourth-quarter earnings of 51 cents a share on sales of $25.59 billion. Wall Street analysts had expected profit of 66 cents a share on sales of $26.06 billion, according to a consensus estimates from Thomson Reuters.
In addition, the company posted a current-quarter sales forecast of between $18.2 billion and $19.9 billion. Analysts currently expect $19.67 billion for the first quarter.
The company said international sales gained just 13 percent, lower than Wall Street forecasts for around 14 percent to 15 percent.