Nvidia’s share price has slumped to its rock-bottom since 2019, bringing its market value under $1 trillion for the first time in months. The stock now trades at levels last seen before the artificial intelligence sector’s swift growth. Despite significant AI spending by companies, the decline has deepened in recent weeks. Analysts say the fall according to experts follows a steep slide that has erased earlier gains. The decline reflects investor caution even as demand for AI chips remains high.