NEW YORK (AP) -- Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and the Nasdaq Stock Market:
J.C. Penney Co. Inc., up 6 cents to $7.77
The department store chain said that a key sales measure improved from last month and that it expects that it will have ample cash at year end.
McKesson Corp., up $4.09 to $133.72
Shares of the prescription drug distributor spiked on reports that it is maneuvering to acquire German rival Celesio AG for more than $5 billion.
Talisman Energy Inc., down 30 cents to $12.45
Activist investor Carl Icahn tweeted that he has accumulated a nearly 6 percent stake in the Canadian oil and gas company.
PHH Corp., down $1.05 to $24.87
Sterne Agee stripped the mortgage and vehicle fleet management company of its 'buy' rating, citing a rapid rise in its share price after a big shareholder suggested a restructuring.
Tower Group International Ltd., down $3.02 to $4.39
The reinsurance provider announces a $215 million goodwill impairment charge for the second quarter and says it will boost loss reserves by $365 million.
Jamba Inc., down $2.53 to $10.94
The smoothie maker cut its fiscal 2013 guidance, saying reduced spending by consumers hurt its sales in the third quarter.
OCZ Technology Group Inc., down 9 cents to $1.32
The computer component maker gave a second-quarter forecast that fell short of analyst forecasts.
Agenus Inc., up 24 cents to $3.02
The drug developer said a potential malaria vaccine for which it developed an important component fared very well in a late-stage study.