U.S. stocks stumble in February By: MarketWatch January 30, 2010 at 00:01 AM EST Shares are stumbling into February, and a fresh batch of economic reports this coming week is likely to dictate investor sentiment. Read More >> Related Stocks: Cisco Systems Dow Jones Industrial Average (EOD) Exxon Mobil Pfizer Standard & Poors 500 Time Warner United Parcel Service