American Eagle and Questcor are big market movers

NEW YORK (AP) -- Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

American Eagle Outfitters Inc., down $1.62 to $14.76

Light traffic and a very weak forecast sent shares of the specialty retailer tumbling.

J.C. Penney Co. Inc., down 68 cents to $13.33

The retailer's stock slumped for a second day after the company posted its sixth-straight quarter of big losses. On the bright side, some believe it can't get any worse.

Lowe's Cos. Inc., up $1.73 to $45.81

The home-improvement store is riding a red-hot housing market as consumers spend on big-ticket items like appliances.

Nasdaq

PetSmart Inc., down $4 to $71

The pet store chain fell a little short on quarterly revenues, but its stock may also be feeling the downward gravitational pull of the retail sector

Questcor Pharmaceuticals Inc., up $2.88 to $67.83

BofA/Merrill upgraded the drugmaker's stock based on Acthar sales and outlook.

Staples Inc., down $2.57 to $14.27

Second-quarter profit tumbled 15 percent and the office supply retailer closed some stores as traffic declined.

Diamond Foods Inc., up $3.66 to $22.79

The snack food company may settle a securities lawsuit for about $96 million and it forecast better-than-expected revenue.

Galena Biopharma Inc., up 17 cents to $2.14

The biopharmaceutical company said Europe has granted a patent for NeuVax, used to treat breast cancer patients.