Stock market today: Dow, S&P 500, Nasdaq futures falter as Wall Street weighs Nvidia's big earnings beat

U.S. stock futures indicated a weaker open on Wall Street Tuesday as investors digested Nvidia's blockbuster earnings report and looked ahead to more economic data. Dow Jones Industrial Average futures fell 0.2%, S&P 500 futures slipped 0.3% and Nasdaq 100 futures were down 0.4%.