Mark Zuckerberg has changed his Facebook status to say he has listed a company on NASDAQ.
The company's founder rang the market's opening bell remotely from California, and he hopes the share sale will be one of America's biggest, raising more than $16bn.
That would value the whole company at around $104bn. But is it worth that much?
Scott Heidler reports live from New York, where he interviews Max Wolff, an analyst at GreenCrest Capital.
