WAL-MART, AMEX DRAG DOWN THE DOW: Here's what you need to know (DIA, SPY, SPX, QQQ, TLT, IWM, WMT, GREK, AXP)

Stocks went nowhere as the major equity indexes were little changed for the second straight day, though the Dow did lead losses as American Express and Wal-Mart shares declined bringing the blue chip index back below 18,000.  First, the scoreboard: Dow: 17,986.5, -43.3, (-0.2%) S&P 500: 2,097.5, -2.2, (-0.1%) Nasdaq: 4,924.7, +18.3, (+0.4%) And now, the top stories on Thursday: 1. The big news on Thursday came from American's biggest retailer: Wal-Mart. The company reported fourth quarter earni...