S&P 500 posts another record close, Costco raises membership fees: Market Domination Overtime Yahoo FinanceNvidia leads Nasdaq and S&P 500 to record high closes ReutersStock Market News: Dow Gains 400 Points Barron’sStock Market Today: Stocks extend record run; Nvidia, Apple, Amazon higher TheStreetS&P 500 closes above 5,600 for the first time, lifted by gains in Big Tech: Live updates CNBC