Stocks are trying to recover from Thursday's sell-off in midday trading Friday. Investors are feeling positive from the latest economic reports including the strong GDP data. The University of Michigan's final September reading on sentiment is at its strongest in more than a year. The index rose to 84.6 from 82.5 the prior month. Nike (NKE) is lifting the blue chips higher. The sporting-goods maker is scoring big with investors after beating earnings expectations. A better-than-expected report is also lifting Micron Technology (MU) stock. Janus Capital (JNS) is the biggest gainer. Shares are surging to their highest level in four years on news 'Bond King' Bill Gross is leaving Pimco to join Janus.