[Chart courtesy of MarketWatch.com][Chart courtesy of MarketWatch.com]Moving the marketThe S&P 500 and Nasdaq started strong today as Wall Street tried to bounce back from last week’s AI scare.Nvidia led the charge, rallying just over 2% after its partnership with OpenAI sparked new debate about whether big infrastructure spending can keep the AI boom alive.Advanced Micro Devices and Micron Technology both jumped too, giving the Nasdaq an extra boost thanks to ongoing big-ticket investments in the sector.Bu ...