Stock market news today: Nasdaq sinks, Nvidia drops 5% ahead of next round of Big Tech earnings Yahoo FinanceS&P 500 and Nasdaq fall as tech shares struggle ahead of megacap earnings: Live updates CNBCStock Market Today: Dow Gains 200 Points; Earnings in Spotlight — Live Updates The Wall Street JournalMorning Bid: Microsoft and job openings to hit pre-Fed vigil ReutersStock Market Today: Dow rises as Microsoft results, Fed decision loom MarketWatch