Stocks are mixed on Wall Street as more earnings come in

U.S. stock indexes are mixed in afternoon trading Friday as Wall Street weighs another batch of corporate results from the summer earnings period.The S&P 500 was up less than 0.1% after erasing an earlier loss. The benchmark index is on track for its first weekly loss in four weeks. Losses in technology stocks outweighed small gains in communication services and other sectors. Treasury yields remained near their highest levels since June.The Dow Jones Industrial Average was down 85 points,