By JOE BEL BRUNO, Associated Press | July 18, 2008 Wall Street closed out an impressive week with a mixed performance Friday after disappointing high-tech earnings punctured some of investors' enthusiasm over better-than-expected bank earnings reports. But the major indexes still ended the week with big gains, the result of rising optimism about the troubled financial sector. The market was clearly pleased when Citigroup Inc., while reporting a second-quarter loss Friday morning, beat analysts' forecasts and joined Wells Fargo & Co. and JPMorgan Chase & Co. in delivering stronger results than the market anticipated. But investors who ecstatically sent the Dow Jones industrials soaring by more than 480 points over Wednesday and Thursday were brought back down to earth by results from Google Inc., Microsoft Corp. and Advanced...
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