21Vianet Group, Inc., the largest carrier-neutral Internet data center services provider in China, filed on Monday with the SEC to raise up to $150 million in an initial public offering. The Beijing-based company, which was founded in 1999 and booked $80 million in sales last year, plans to list on the NASDAQ under the symbol VNET. Morgan Stanley, Barclays Capital and J.P. Morgan are the lead underwriters on the deal, for which pricing terms and timing were not disclosed.
