Nvidia, once again, has stolen the show — specifically the chip titan's announcement of a massive investment in a struggling rival. The S&P 500 and the Nasdaq Composite touched fresh records on Thursday, with the indexes coming to life after a tepid response to a widely expected rate cut from the Federal Reserve on Wednesday. The catalyst? A $ 5 billion deal between Nvidia and Intel, which sparked a big rally led by chip stocks in early morning trading. Nvidia shares ticked rose 3%, while Intel soared a ...