The 10 Biggest IPOs Ever

Twitter raised the price range for its IPO to $23 to $25 on Monday, meaning the company now has the potential to raise up to $2 billion. If it prices at the high end of its range, Twitter would have a market value of as much as $13.6 billion.
But despite being one of the most talked-about IPOs of the year, Twitter’s initial public offering is expected to be nowhere near as large as those of companies such as Visa and Facebook. Last year, Facebook raised $16 billion in an IPO that valued the social media giant at $104 billion. However, it's worth noting that Facebook shares, which debuted at $38, lost more than half their value within three months of going public.
As Twitter prepares for its public debut, check out these 10 U.S. companies that had the biggest IPOs ever, as compiled by S&P Capital IQ.