Stocks traded sharply lower amid worries over global growth in Europe and China, and continuing concerns about debt troubles in peripheral euro zone countries.
The Dow Jones Industrial Average fell more than 130 points after ending a volatile week loweron Friday.
Here are six stocks that are on the move:
The sports shoe and clothing retailer was trading at highs not seen since March, 2005.
The personal technology company cut earnings estimates for the year to a net loss from an expected profit.
The entertainment company was upgraded to buy from hold at Stifel Nicolaus.
The energy company was downgraded to sell from neutral at Bank of America Merrill Lynch.
The clothing retailer was initiated outperform at BMO Capital with a $28 dollar price target.
The telecom equipment maker was trading at lows not seen since March, 2009.
Get the latest stock picks on the CNBC Stock Blog.