Tech stocks led the major indexes higher Friday, with many AI investor favorites among the top performers, in what could be a sign of renewed confidence in the sector. Are investors ready to pile back into the AI trade? Shares of cloud computing giant Oracle (ORCL), which slumped recently amid worries about its dependence on a few big AI customers, saw its shares pop over 8% Friday afternoon following reports that it's set to become a major investor in a new TikTok joint venture. Memory chip supplier Micron ...