Stocks thrashed out of the starting gate in mixed trade Friday, with retailers under some pressure, as three economic reports delivered a beat, a miss and a match. The S&P 500 added 0.2%, the Dow Jones industrial average inched up 0.1%. The Nasdaq slipped 0.1%, hamstrung by Apple's (AAPL) 2% decline. Volume rose a fraction on the Nasdaq and slipped 15% on the NYSE, compared with Thursday morning's trade. A Labor Department report released prior to