US Stocks Inch Up Even as Election, AI Risks Weigh on Outlook

US stocks were higher after the market opened as Americans headed to the polls on Election Day, with control of both chambers of Congress at stake and investors weighing mounting risks to the artificial intelligence trade.

The S&P 500 Index gained 0.2% while the Nasdaq 100 advanced 0.6% as of 9:33 a.m. in New York, clawing back earlier losses. Technology shares attempted a rebound a day after entering a correction.

The election adds another layer of uncertainty to an already fragile market backdrop. Polymarket is pricing roughly a 95% probability of Democrats taking the House of Representatives and about a 77% chance of a Senate victory, pointing to a potential sweep of both chambers. The divergence between opinion polls and prediction-market expectations has drawn fresh attention as investors position for the outcome.

See more: What Midterm Election Results Could Mean for the Market Outlook

History, however, has generally favored stocks following midterm elections. Large-cap equities have gained about 15% on a market-cap-weighted basis and 16% on an equal-weighted basis in the six months after midterms since 1982, according to Morgan Stanley. Both measures have advanced roughly 22% over the subsequent year.

“For all the prognostications and reactions to tonight’s results, here’s the key stat to remember: While past performance doesn’t guarantee future results, since 1950, so 76 years, the S&P 500 has never been lower 12 months after a midterm election, and that is the most notable point of all for clients,” said Tom Essaye, founder of The Sevens Report.