Stock Market Today: The Dow Jones index falls Monday as oil prices climb amid a lack of progress in U.S.-Iran talks. SpaceX stock rallies.

Stock Market Today: The Dow Jones index falls Monday as oil prices climb amid a lack of progress in U.S.-Iran talks. SpaceX stock rallies.

U.S. stock futures were mixed on Monday, as the Dow Jones index slipped and the S&P 500 and Nasdaq 100 indices rose.