Stock market today: Dow slips, Nasdaq pops as Amazon's OpenAI deal boosts AI bets

US stocks turned mixed Monday morning as Wall Street looked to carry its momentum into the first trading session, with Big Tech names like Amazon (AMZN) and Nvidia (NVDA) again leading the way higher. The tech-heavy Nasdaq Composite (^IXIC) marched higher, rising about 0.5%. The S&P 500 (^GSPC) erased earlier gains to hover around the flatline. The Dow Jones Industrial Average (^DJI), which includes fewer tech stocks, lost 0.5% Wall Street is looking to keep up a rally that raged throughout October, whe ...