Stock market today: Stocks wobble as Nvidia, AI rally shows signs of fatigue Yahoo FinanceS&P 500 hovers near the flatline as Nvidia struggles for a second day: Live updates CNBCStock Market Today: Dow, S&P Live Updates for June 21 BloombergStock Market Today: Dow Steady as S&P 500, Nasdaq Slip Further From Records The Wall Street JournalStock Market Extends Losses After AI Sell-Off; Hot Biotech Soars 30% — Here’s Why Investor’s Business Daily