Krispy Kreme and Amazon.com are big market movers

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

NYSE

Dollar General Corp., down $1.63 to $57.66

Winter storms hurt the retailer's sales, but investors appeared more concerned about the company's weak forecast for this year.

Williams-Sonoma Inc., up $5.77 to $64.74

The performance of the home-goods retailer during the past quarter surprised Wall Street as sales at stores opened at least a year jumped.

Krispy Kreme Doughnuts Inc., up 23 cents to $20.11

The doughnut shop lifted its earnings outlook for its current fiscal year and increased the size of its share buyback program by $30 million.

PVH Corp., down $7 to $115.04

Morgan Stanley downgraded the apparel company, believing that it will have to increase spending on advertising due to competition.

Nasdaq

Amazon.com Inc., up 87 cents to $371.51

The online retailer hiked the price of its annual Amazon Prime membership by $20, to $99, to offset rising costs and new services.

Plug Power Inc., up $1.20 to $8

Quarterly revenue jumped to $8 million, from less than $6 million, as the fuel cell machine company lines up some large clients

Stein Mart Inc., down 60 cents to $13.69

Profit slumped during the fourth quarter as the discount retail chain marked down prices in a tough competitive environment.

Kirkland's Inc., up 55 cents to $19.11

Investors overlooked falling profits during the most recent quarter, focusing instead on improving trends for the apparel store.