US markets opened higher on Wednesday after Democrats swept the midterm elections, taking control of both the House and Senate on Tuesday. The Nasdaq opened up 1 percent, the Dow Jones Industrial Average rose 1.8 percent, and the S&P 500 gained 1.1 percent as trading began at 9:30am ET (14:30 GMT).
The election outcome removed a major source of political uncertainty for investors, with President Donald Trump signaling on social media that he would accept the results. The shift in congressional control carries immediate implications for trade policy, healthcare regulation, and the artificial intelligence sector, areas where Democratic priorities may reshape market conditions over the next two years.
Retailers dependent on imports rose amid possible changes in tariff policy, with Walmart up 1.3 percent and Target up 3.3 percent. In the health insurance sector, UnitedHealthcare fell 2.9 percent and CVS Health dropped 12 percent, while Cigna gained 1.6 percent.
Oil prices declined, with global benchmark Brent crude futures down $3.20, or 3.09 percent, to $100.40 a barrel, and West Texas Intermediate crude down $3.01, or 3.13 percent, to $93.08.
Companies tied to the artificial intelligence buildout faced a different outlook, as Democrats have been more critical of the sector. Oracle and Nvidia both opened lower, while Alphabet, Google's parent company, rose 3.5 percent at the opening bell.
Dan Ives, managing partner of Yorkville Ives, said in a note on Wednesday that Democratic control, especially of the Senate, would create major hurdles for AI and tech legislation over the next two years. He added in a post on X that an estimated 10 percent of datacenters would not proceed as planned.
Democrats performed well in states where the AI buildout is pronounced. In Ohio, Sherrod Brown flipped a Senate seat. In Texas, the party took a Senate seat with James Talarico, and Gina Hinojosa won the governor's race, also flipping that seat.
Investors are also monitoring whether the war with Iran and the conflict between Russia and Ukraine may end amid reports of talks, following a previous session in which oil prices reached their lowest levels in four weeks.
Markets will continue to respond to the policy direction of the incoming Democratic majority, particularly on tariffs, healthcare, and technology regulation. Oil traders are watching diplomatic developments that could affect energy prices, while the AI sector braces for potential legislative scrutiny over the next two years.
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