iSoftStone Holdings Limited, a leading China-based provider of outsourced IT services and solutions, filed on Tuesday with the SEC to raise up to $50 million in an initial public offering. The Beijing-based company, which was founded in 2001 and booked $180 million in sales for the 12 months ended September 30, plans to list on the NYSE under the symbol ISS. UBS Investment Bank, J.P. Morgan and Morgan Stanley are the lead underwriters on the deal, for which pricing terms and timing were not disclosed.