Caterpillar helps boost US Stocks

U.S. stocks opened modestly higher on Monday after heavy-equipment maker Caterpillar Inc. reported positive results and said the global economy is improving. Shares of Caterpillar were up 4.2%, helping lift the Dow Jones Industrial Average, which gained 34.31 points to 11,238.59. The S&P 500 Index rose 2.07 points to 1,219.35. The Nasdaq Composite climbed 4.94 [...]