U.S. stocks slump on European debt woes By: MarketWatch November 26, 2010 at 09:53 AM EST U.S. stocks fall despite positive signs on Black Friday sales in the U.S. as worries over the euro zone’s sovereign debt crisis weigh. Read More >> Related Stocks: Alcoa Best Buy Big Lots Boeing Co DuPont USA Home Depot Macy's Standard & Poors 500 TJX Companies Tiffany & Co