US stock markets surged Wednesday, November 4, 2026, as investors digested a sweeping Democratic victory in the midterm elections and weighed the potential impact of a divided government on the war with Iran, federal policy, and the artificial intelligence trade.
The Dow Jones Industrial Average surged 1,569 points, or 3%, marking its best single-day performance since April 2025 and its largest post-midterm single-day gain since 1982, according to data from CFRA Research, as reported by CNN. The S&P 500 rose 1.58% for its second-biggest post-midterm gain since 1982, following the post-election rally in 2018. The Nasdaq Composite advanced 1.44%, registering its strongest post-midterm single-day showing since 2018. Stock futures dropped Tuesday night before erasing losses overnight as investors embraced the certainty of the election outcome and President Donald Trump’s acknowledgment that he would accept the results.
Wall Street seems to think Democrats' victory last night is bad news for nuclear power. pic.twitter.com/zIOj6b4RAp
Democrats secured at least 54 seats in the Senate and 247 in the House, delivering a resounding sweep that left Wall Street trading desks digesting the results. George Saravelos, global head of FX research at Deutsche Bank, remarked in a note that the combination of a large Democratic majority in Congress alongside President Trump expressing a willingness to work with the opposition should act as a break on extreme policy outcomes and bring down risk premia. The political change triggered anxieties about a potential socialist takeover of Capitol Hill and concerns over President Trump’s lame-duck status potentially thwarting his pro-growth agenda, according to observations from Charles Gasparino. Mark Haefele, chief investment officer at UBS Global Wealth Management, noted that a more definitive Democratic outcome would drive near-term volatility, particularly in technology and other areas subject to greater regulatory scrutiny, though he did not anticipate an immediate strategic shift in portfolios.
Energy Markets Face Policy Gridlock
Bob McNally, president and founder of Rapidan Energy Group, stated that traders were betting the administration would abandon the war due to a larger-than-expected midterm shellacking, though his firm remained skeptical. As benchmark US stock indexes extended gains, oil prices dropped sharply and bond yields fell. Traders weighed the future of the conflict in the Middle East alongside a newly Democrat-controlled Congress. In a post on X, Vice President JD Vance wrote, The reason we lost is the war,
adding, The president himself said so last night.
One of the things the data analysts on our side obsessed over was "composition"—whether the electorate looked close enough to 2024 for Republicans to win. And despite polls that showed a Democrat blowout, the data kept on telling us the same story: in some states turnout was…
Michael Strobaek, global chief investment officer at Switzerland’s Bank Lombard Odier, noted that the Democratic victory in taking control of both the House and Senate is a net positive for financial markets, as reported by Family Wealth Report. Investors warmed to the prospect of policy gridlock under a divided government, which can curb excess spending and create a more predictable market outlook. The VIX volatility index sank almost 20%. US Treasuries rallied, sending the benchmark 10-year yield down to 4.91%.
Stock Prices Drop for AI Infrastructure
Nvidia shares fell 3%, and an exchange-traded fund tracking AI infrastructure dropped 9% as semiconductor chipmakers and companies involved in the data center buildout fell. Neoclouds CoreWeave and Nebius sank roughly 10% and 6.7%, respectively. Tesla and SpaceX shares fell about 3.3% and 3.9%, respectively, as political scrutiny of Elon Musk added to investor caution, according to Heatmap News. Jefferies analyst Julien Dumoulin-Smith noted in a client communication that laggards included anything touching data centers. GE Vernova dropped over 9%, and advanced nuclear developer X-Energy fell nearly 8.5%. Strategic Wealth Partners CEO Mark Tepper raised doubts regarding prospective deals involving Musk, stating that heightened scrutiny could generate operational challenges for the associated companies.
While a blue wave could spark volatility in certain sectors, such as tech and AI, given growing public opposition to the buildout of data centers, we believe markets can grind higher regardless of the outcome as investors applaud falling uncertainty,
wrote Justin Buell, chief investment officer at Continuity Group, in a note cited by CNN.
Clean Energy Gains Safe Haven Demand
The S&P Global Clean Energy Transition Index rose over 3%, while domestic solar provider First Solar gained 5% and installer Sunrun climbed almost 1.5%. Safe-haven assets also benefited, with gold rising about 3%, reflecting shifts in investor sentiment across global asset classes, marking its best single-day performance since April 2025.
Stock futures fall on speculation Democrats to win big in midterms, slow data center buildout: Live updates https://t.co/QSbm7utps0
Earlier coverage: Markets Recalibrate After Midterms as Dow Surges
US stock futures tumble as Democrats score key midterm election wins https://t.co/KbOPaq2Oln
More on Dow Jones Industrial Average
[US stocks rise, dollar slides as investors digest Democrats’ midterm victories] “Government bond yields fall while initial fears ease over impact of election results on world’s biggest economy“https://t.co/sX4F61s0PP
The US midterm election "shows that the political underpinning of the rapid, aggressive AI growth story is shaky," @jfkirkegaard says. "It doesn't mean it's going to stop or be made illegal, but the dynamic of the growth story has shifted." https://t.co/5BqreEUqhg
Investors are keeping a close eye on the elections today. I’m curious myself to see how these results could shake up business. https://t.co/e0cojZ2XoU
Democrats won both the House & Senate in a midterm for the first time since 2006. …. Historically, the S&P 500 gained 3 months post-election in ALL 11 prior cases (median +13.3%), with zero bear markets over the next 6 months. From @Bluekurtic pic.twitter.com/K9R26LgF34
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