Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
McDonald's Corp., down $3.70 to $92.61
The world's biggest burger chain said sales at its restaurants around the world fell 2.2 percent in November.
Sony Corp., down $1.01 to $21.15
The electronics and entertainment company's PlayStation store was not working for some users, due to a possible cyberattack.
LeapFrog Enterprises Inc., down 8 cents to $4.92
An analyst at Roth Capital downgraded his investment rating on the electronic toy maker's stock, citing possible slower sales.
Bristol-Myers Squibb Co., up 2 cents to $60.67
The drugmaker said a treatment for Hodgkin lymphoma, a blood cancer, showed promise in a trial. Its stock rose to a 13-year high.
Cubist Pharmaceuticals Inc., up $26.24 to $100.60
The pharmaceutical company said Merck plans to buy it for about $8.4 billion to expand into treating so-called "superbugs."
Digital River Inc., down $5.80 to $19.71
The online shopping services company said it was giving Microsoft more time to decide whether to renew a key contract.
Amgen Inc., up $2.40 to $171.64
The company said its drug used to treat bone disorders related to cancer received additional approval for marketing in the U.S.
Starbucks Corp., up 23 cents to $83.80
The coffee chain's stock rose to an all-time high. Last week the company unveiled new efforts to sell food and booze at its stores.