Facebook has finally gone public.
It priced its IPO shares at $38, which means the company is worth more than $104 billion. It's already worth more than most of the tech companies publicly traded today -- combined.
But there's a lot you probably don't know about the company and its founder and CEO, Mark Zuckerberg.
While you watch the roller coaster ride of its Friday trading debut, we've assembled a list of facts about the company and its CEO that aren't widely known. We collected them from previous stories, and an excellent profile that appeared in Bloomberg BusinessWeek Thursday.