NEW YORK (AP) -- Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and the Nasdaq Stock Market:
Rackspace Hosting, Inc., up $2.35 to $29.88
The cloud computing company rebounded from what has been a rough year with a very strong first-quarter performance and outlook.
Encana Corp., up 42 cents to $22.98
Higher gas prices and rising volumes pushed the Canadian energy company past Wall Street expectations during the first quarter.
Nabors Industries Ltd., down 1 cent to $25.76
Bernstein Research downgraded the oilfield services company, believing that optimism for the sector has peaked as risks increase.
J.C. Penney Company Inc., down 9 cents to $9.09
Sterne Agee is cautiously optimistic that the retailer will top expectations when it posts quarterly earnings numbers on Thursday.
DirecTV, up $1.08 to $86.08
Some industry analysts say that not only is it likely that AT&T will buy the satellite television company, but that it's also a great idea.
Keurig Green Mountain Inc., up $8.36 to $119.07
Coca-Cola raised its stake in the beverage dispenser company to 16 percent, seeking to get its familiar brands into more homes.
Halozyme Therapeutics Inc., up 52 to $8.04
The drug developer said it's closer to reinitiating the study of a pancreatic cancer treatment that was halted by regulators.
Elizabeth Arden Inc., down $8.13 to $27.50
The cosmetics maker reported a surprising quarterly loss and said it is exploring ways of creating shareholder value.