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Wall St edges lower on Portugal, China



    NEW YORK (Reuters) - Stocks opened lower on Wednesday after Moody's downgrade of Portugal's credit rating to "junk" and China's interest rate rise sparked jitters about global growth prospects.

    The Dow Jones industrial average was down 7.42 points, or 0.06 percent, at 12,562.45. The Standard & Poor's 500 Index was down 3.44 points, or 0.26 percent, at 1,334.44. The Nasdaq Composite Index was down 4.57 points, or 0.16 percent, at 2,821.20.

    (Reporting by Angela Moon, Editing by Kenneth Barry)