S&P 500 Trading Volume Spikes at Wall Street Close: Markets Wrap Yahoo FinanceStock market today: Stocks little changed as Nvidia, AI rally shows signs of fatigue Yahoo FinanceStock Market Today: Dow, S&P Live Updates for June 21 BloombergS&P 500 Gains and Losses Today: Index Edges Lower as AI-Fueled Rally Loses Steam InvestopediaNearly $6 trillion in options due to expire during Friday’s record-breaking ‘triple witching’ MarketWatch