U.S. stocks rally at start, led by metals firms By: MarketWatch July 06, 2010 at 09:46 AM EDT U.S. stocks rose Tuesday, boosted by bullish comments from Australia's central bank and a climb in European and Asian markets. Read More >> Related Stocks: Alcoa BP Plc ADR Freeport-McMoRan Goldman Sachs Group Standard & Poors 500 United States Steel Corp