Millennial Media Files for I.P.O

Mobile advertising network Millennial Media Inc. has filed with regulators to raise up to $75 million in an initial public offering. Morgan Stanley, Goldman Sachs and Barclays Capital are among the underwriters listed for the offering. The Baltimore-based company raised more than $65 million from venture investors, and wrapped up a $27.5 million round a year ago. Backers include from Bessemer Venture Partners, Columbia Capital, Charles River Ventures and New Enterprise Associates.