Stocks limped to a tired close Friday, as early euphoria over some high-profile earnings reports turned into a day of unloading. The New York composite fell 1.6%, the S&P 500 lost 1.2% and the Dow ceded 1.1%. The Nasdaq, where big gains by Amazon (AMZN) and Microsoft (MSFT) cushioned the decline, slid just 0.5%. Volume fell on the NYSE and rose on the Nasdaq. But the exaggerated action in Microsoft's and Amazon's bursts accounted for the Nasdaq's