Nvidia’s share price has dropped to its lowest since 2019, bringing its market value under $1 trillion for the first time in recent months. The stock now trades at prices last seen before the artificial intelligence sector’s swift growth. Despite robust AI spending by companies, the decline has intensified in recent weeks. Analysts say the fall per market watchers follows a sharp slide that has wiped out earlier gains. The decline reflects market caution even as demand for AI chips remains high.