US STOCKS-Wall St tumbles with Microsoft, Caterpillar; data weighs By: Reuters: Company News January 27, 2015 at 10:34 AM EST * Indexes down: Dow 1.7 pct, S&P 1.3 pct, Nasdaq 1.7 pct (Updates to morning trading) Read More >> Related Stocks: Caterpillar Facebook Microsoft Pfizer Procter & Gamble