Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
Valeant Pharmaceuticals International Inc., up $25.49 to $198.75
The Canadian drugmaker plans to buy gastrointestinal diseases drug developer Salix for about $10 billion.
Darden Restaurants Inc., up 38 cents to $62.59
The company behind the Olive Garden restaurant chain named its interim CEO to the post permanently.
Cooper Tire & Rubber Co., down $1.89 to $35.82
The tire maker reported fourth-quarter earnings that fell short of what Wall Street analysts had expected.
Polypore International Inc., up $6.75 to $59.70
It's selling its energy storage business for $2.2 billion and another unit for $1 billion.
Transocean Ltd., down 75 cents to $16.26
Oil prices dropped on the prospect of increased oil supply, weighing on the oil drilling rig company's shares.
Globe Specialty Metals Inc., up 62 cents to $15.99
The U.S. metal producer is merging with European rival Grupo FerroAtlantica.
Dish Network Corp., down 92 cents to $77.39
The satellite TV provider's co-founder Charles Ergen will replace CEO Joseph Clayton.
Apple Inc., up $3.51 to $133
The iPhone maker will invest about $2 billion in data centers in Europe that will power iTunes and other online services.