The following stocks were among those that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
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.
Clarient Inc., up 20 cents at $2.55
The medical device maker signed an exclusive license to technology aimed making better tests for cancer.