Stocks were mixed on Thursday as dozens of the world's largest businesses delivered their quarterly reports. When the closing bell rang, the Dow Jones Industrial Average (DJINDICES: ^DJI) had a small gain, while the S&P 500 (SNPINDEX: ^GSPC) fell a modest 0.3%.Data source: Yahoo! Finance.Tech stocks set the pace for today's decliners, and the Technology Select Sector SPDR Fund (NYSEMKT: XLK) lost 1.5%.