Nasdaq, Dow, and S&P 500 open higher after Democrats sweep US midterms and Trump accepts election results. US markets are trending upwards after Democrats swept the midterm elections, taking control of both the House and Senate on Tuesday. The Nasdaq opened on Wednesday up 1 percent, the Dow Jones Industrial Average up 1.8 percent and the S&P 500 up 1.1 percent as markets opened at 9:30am ET (14:30GMT).