The Associated PressNEW YORK (AP) ¿ The following stocks were among those that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market: NYSE: American International Group Inc., down $4.90 at $28.40 A Sanford Bernstein analyst reportedly said the embattled insurer doesn't have enough reserves to pay some potential claims. Las Vegas Sands Corp., down 47 cents at $15.32 The company's Sands China tumbled in its first day of Hong Kong trading after raising $2.5 billion in an initial public offering. DreamWorks Animation SKG Inc., up 94 cents at $33.47 An analyst upgraded DreamWorks and said the stock has fallen to more "reasonable" levels after speculation of a possible buyout faded. US Bancorp, up $1.18 at $24.13 A RW Baird analyst said the stock price makes it an attractive buy and upgraded shares to the firm's highest investment rating. Supervalu Inc., down 59 cents at $13.83 An analyst downgraded the stock and forecast trouble despite the grocer's attempts to lower prices and turn around its business. Gamestop Corp., down 91 cents at $24.41 Investors worried hat video games may not sell as well early this holiday season as many had hoped. Aflac Inc., up $2.38 at $46.03 An analyst upgraded the supplemental insurance provider, citing its ability to offset potential credit losses and an improving outlook. NASDAQ: Clarient Inc., up 20 cents at $2.55 The medical device maker signed an exclusive license to technology aimed making better tests for cancer.