U.S. stocks traded higher Monday as the Dow Jones Industrial Average rose 77 points to 8515, the SP 500 gained 7 points to 926 and the Nasdaq Composite added 4 to 1842. Enterprise Products Partners LP (NYSE:EPD, $24.99, -$0.30, -1.19%) will buy Teppco Partners LP (NYSE:TPP, $30.08, +$1.39, 4.84%) in a $3.3 billion deal that forms what the companies called the largest publicly traded energy partnership as Enterprise looks to diversify its business.Shares of Wendy’s Arby’s Group Inc. (NYSE:WEN, $