Stock Futures, AI Shares and Dollar Slide After Democrats Sweep US Midterms

US stock futures, artificial intelligence-linked shares and the dollar retreated Wednesday after Democrats won control of both chambers of Congress in the midterm elections, unsettling investors who had anticipated a less sweeping change in Washington.

The results raised questions about the outlook for AI regulation, data-centre construction and federal spending under President Donald Trump. The selloff extended across Asian technology stocks and currencies, although some early losses eased as traders reassessed the implications of divided government, according to Reuters reporting carried by Yahoo Finance.

NBC News described the election result as a larger Democratic wave than Wall Street had expected, with stock futures falling after the party's key Senate victories.

Futures Recover Part of Their Initial Losses

S&P 500 futures were down 0.35% in the Reuters market snapshot. Nasdaq futures had fallen more than 2% before recovering to a decline of 0.5%, as the initial reaction moderated. European futures were 0.4% lower after an earlier drop of 1.5%.

The election delivered Democratic victories in Senate races in South Carolina, Texas and Ohio, helping the party secure majorities in both the House and Senate. The breadth of those gains, in Republican territory, surprised investors and intensified scrutiny of industries that have benefited from expectations of rapid growth.

Yet the early recovery in futures suggested traders were not treating the outcome as an unqualified threat to company profits. A Democratic Congress could constrain parts of Trump's legislative agenda, but gridlock does not automatically translate into weaker earnings. That distinction became important as the first wave of selling subsided.

AI Infrastructure Faces a New Political Question

AI-related companies bore much of the pressure in Asian trading. Samsung, SK Hynix and Taiwan Semiconductor Manufacturing Company fell sharply before trimming their declines. South Korea's KOSPI recovered from an earlier 3% fall to trade slightly higher in the Reuters report.

The concern was not simply which party controls Congress. Investors were weighing whether tougher oversight could slow construction of the data centres and computing infrastructure underpinning the AI expansion.

Texas drew particular attention because of its importance to data-centre development. Analysts cited by Reuters warned that potential restrictions on new projects could create delays, although such restrictions remained a risk under discussion rather than an established nationwide policy.

That uncertainty matters to the broader technology trade: extensive investment in computing capacity has helped support global equity markets, leaving chipmakers and infrastructure suppliers exposed to changes in expectations about future spending.

Dollar Weakens as Treasuries Rally

The response extended beyond equities. The US dollar index fell 0.37% to 101.34, while the euro gained 0.5% to $1.1249 and sterling rose 0.37% to $1.3464. The yen strengthened 0.7% to 157.55 per dollar, and the Swiss franc gained almost 0.8% to 0.8144 per dollar.

US government bonds attracted buyers. The benchmark 10-year Treasury yield declined six basis points to 4.906%, as investors considered whether political gridlock might restrain spending and whether slower AI investment could reduce pressure for additional interest-rate increases.

Cryptocurrencies also weakened amid concerns about stronger regulation, according to the Yahoo-carried Reuters account. Meanwhile, oil prices fluctuated as traders weighed negotiations involving the wars in Ukraine and Iran against risks of further supply disruption.

What Investors Will Watch Next

The election has opened questions for defence, healthcare, banking and the federal fiscal outlook. But Wednesday's changing futures prices also showed the limits of drawing immediate conclusions from a political surprise.

For markets, the next test is whether fears about regulation and stalled investment become concrete policy developments—or whether corporate fundamentals regain attention once the initial election shock fades.