Stock market today: Dow, S&P 500, Nasdaq gains fizzle with AI buzz, Trump's shutdown threats in focus
US stocks were mixed on Thursday, as an early rally around OpenAI (OPAI.PVT) buzz fizzled and investors weighed the chances of a lengthy US government shutdown. The tech-heavy Nasdaq Composite (^IXIC) rose 0.2%, paring sizable early gains. The S&P 500 …