AMC Entertainment, which owns or operates 380 movie theaters in the US and Canada, filed on Wednesday with the SEC to raise up to $450 million in an initial public offering. The Kansas City, MO-based company, which was founded in 1920 and booked $2.7 billion in sales over the last 12 months, plans to list its shares under the symbol AMC. The company was taken private in 2004, when J.P, Morgan and Apollo Management led a $2 billion buyout. J.P. Morgan, Goldman, Sachs & Co. are the lead underwriters on the deal. No pricing terms were disclosed.