Democrats took control of both the House and the Senate on the night between Tuesday, November 3 and Wednesday, November 4, 2026, winning at least 245 House seats according to an MS NOW estimate, well beyond the 218 needed, and reaching the 51 required in the Senate, according to the Associated Press. They picked up seats even in traditionally Republican states such as Texas and Kansas.
The wave ran wider than the polls suggested, especially in the Senate, where on the eve of the vote Morgan Stanley saw a toss-up with a slight Democratic edge. For Donald Trump, the result opens two years of divided government, with a Congress that can investigate the administration and, holding the purse strings, slow much of the White House agenda.
For investors, the question is how much an opposition Congress really changes. The answer is less obvious than it looks. Below are the assessments of the most closely followed investment houses and asset managers, from Morgan Stanley to Goldman Sachs, from State Street to J.P. Morgan, on which sectors are at risk, which could gain, and how to factor that into portfolio choices.
How markets reacted overnight
The first reaction was that of a market caught off guard. As the count progressed during Asian trading hours, S&P 500 futures fell as much as 1.4% and Nasdaq 100 futures as much as 2.4%, dragged down by artificial intelligence stocks and a sharp drop in Asian semiconductors.
Dip buying then flipped the picture. At 9:48 a.m. Italian time, S&P 500 futures were up 0.2% and Nasdaq 100 futures 0.3%. The dollar weakened against the major currencies and the 10-year Treasury yield fell three basis points to 4.93%.
Europe followed the same path. A shaky open gave way to gains, and at 10 a.m. the Euro Stoxx 50 was up 0.8%, the DAX 0.6% and Spain’s IBEX 1.6%, with the euro up 0.5% at $1.1247. On the Milan Stock Exchange (Piazza Affari), the heaviest early buying went to UniCredit, while Ferrari slid to the bottom of the index.
The night left the sense that much of the result was already priced in, and that the tech correction has roots with little to do with the vote.
The limits of the new majority
The new majority’s power has clear boundaries. Trump keeps the veto and broad authority over tariffs, immigration and federal regulation. Democrats cannot repeal the 2025 law on their own, though they can use must-pass budget votes to win changes or delay some cuts.
Morgan Stanley cautions against overstating the impact of the ballot box. In the bank’s view, the vote redraws Washington without necessarily redrawing the investment case, and what moves markets remains inflation, growth and corporate earnings.
Jesper Koll of Monex Group takes a similar line. He describes a presidency used to governing by executive order and doubts the change of majority will affect concrete policy much, though he expects more noise from investigations and talk of impeachment. For Michael Arone of State Street Global Advisors, the real danger is investors overreacting, not the blue wave itself.
Health care is the one call almost everyone shares
Tobin Marcus of Wolfe Research points to health care as the main front on which Democrats will move. The new majority will aim to restore the enhanced Affordable Care Act subsidies, which have now expired, or to unwind part of the Medicaid overhaul contained in the One Big Beautiful Bill Act. That could lift expectations for hospitals and health insurers, though any measure still has to get past the White House.
Man Group also sees a clear Democratic win as a boost for health care and retail, at the expense of capital markets and, to a lesser degree, aerospace and defense. Arone adds consumer staples, which he expects to benefit from the Democrats’ focus on the cost of living and from the chance they try to scrap Trump’s tariffs.
Check how far the trade has already run before buying. The S&P 500 health care sector is up more than 19% year to date and sits at record levels. Part of the good news is in the price, and anyone entering today pays valuations that are anything but a discount.
The artificial intelligence question
On technology, which suffered most overnight, the political reading mixes with dynamics the vote did not create. Jake Dollarhide of Longbow Asset Management expects regulatory pressure on everything AI-related and a possible slowdown in the headlong growth the market had come to take for granted. Tapas Strickland of Moomoo worries above all about a slowdown in data centers, noting that Texas and Georgia alone account for roughly a third of AI-related spending and projects.
Goldman Sachs strategists play down the gloomiest scenarios. A Democratic Congress could curb tax incentives for data centers, but a national moratorium looked unlikely whatever the outcome. Morgan Stanley still estimates that Microsoft, Amazon, Alphabet and Meta will spend more than USD 1 trillion on investment in 2027, despite growing protests over electricity bills, water use and infrastructure costs.
Tech came into the vote already bruised. Nick Ferres of Vantage Point Asset Management noted that the Goldman Sachs AI basket had lost 15% in October and was already more than 24% below its peak. Tai Hui of J.P. Morgan Asset Management asked how much of the drop is down to the elections and how much to the AI narrative of the past three or four weeks, and leans toward the second explanation.
Anyone holding global or Nasdaq ETFs will not find a reason to sell in this vote. It is a good excuse to check how much weight the big AI names really carry.
Winners and losers in defense, banks and renewables
Defense sends mixed signals. Alex Sagal of Wells Fargo Investment Institute believes a broad Democratic win could slow real growth in spending, barring a wider deal that raises funding for defense and health care together, while he rates the sector’s earnings outlook as stable to modestly positive. BNY considers a cut to the military budget unlikely, though supplemental funds tied to the conflict with Iran would face far tougher scrutiny. Monica Guerra of Morgan Stanley advises picking individual stocks rather than buying the whole sector, and points to shipbuilding, autonomous systems and missile defense as the most promising areas.
State Street sees an entirely Democratic Congress putting pressure on banks and industrials, sectors highly sensitive to the balance of power in Washington.
Renewables, penalized since Trump returned to the White House, got a lift. On the morning of November 4, 2026, Denmark’s Ørsted jumped 7.3% and turbine maker Vestas gained 5.2%. BNY believes a Democratic Congress could restore some support for solar and wind, although without overriding the presidential veto the 2025 cuts to those supports will not be undone.
Treasuries, the dollar and gold, seen from Italy
The bond market read the result as a brake on public spending. Treasuries rallied on the bet that legislative gridlock will limit deficit measures and new government bond issuance. Tai Hui sees that as the upside surprise of divided government.
George Brown of Schroders is not convinced the truce will last. He describes a two-stage risk, with yields falling right after the vote and then rising again as the debt ceiling negotiation approaches and attention shifts to the cost of the compromise, a deal that on the firm’s estimates could widen the deficit by about one percentage point of GDP. Schroders puts the moment the borrowing limit is reached at around mid-2027, while other estimates reported by Reuters push it toward the end of that year.
A much closer deadline is already on the calendar. Congress postponed the fight over fiscal 2027 spending until after the vote, setting December 11 as the deadline for a deal. Even before the elections, Libby Cantrill of Pimco had warned that with the Senate in Democratic hands spending could actually increase, given their stronger negotiating position. For anyone thinking of extending duration on US debt, this may not be the best moment.
Then there is the exchange rate, a variable Italian savers tend to underestimate. A weaker dollar erodes the return on US stocks and bonds held without currency hedging. With the euro back above 1.12, check whether the ETFs in your portfolio are the currency-hedged versions.
Not everyone is betting on a prolonged decline in the greenback. Koll of Monex believes the vote could even support the dollar, because the market will perceive greater Federal Reserve independence.
The winner overnight was gold. With the dollar and yields falling, it climbed back above $4,000 an ounce, touching an intraday high near $4,029.
What history teaches about the period after midterms
According to a Morgan Stanley analysis, under Republican presidents the S&P 500 gained an average of 23% in the year following midterms when Congress was divided, against 16% when Democrats controlled both chambers. The index was also higher one year out from every midterm election since the early 1980s. Ariana Salvatore, who leads Morgan Stanley’s US public policy research, doubts that script will repeat this time, while still seeing plenty of reasons to stay constructive on US equities.
What to do now
Taken together, the assessments amount to an invitation to adjust a portfolio rather than overhaul it. Most strategists advise against upending a well-diversified allocation on the strength of the headlines. Arone notes that equities have historically tended to do well after midterms and that staying the course is often the better choice.
For anyone who does want to adapt their asset allocation, a moderate overweight in health care and consumer staples can make sense, bearing in mind that valuations in the former are already generous. On the AI giants, the sensible move is to trim excessive concentration without abandoning a theme whose fundamentals go well beyond politics. In defense and renewables, picking individual stocks pays better than buying the sector wholesale. On US fixed income, the tug-of-war over the debt ceiling justifies caution on duration.
And then there is the exchange rate, which with a stronger euro can turn a good investment on Wall Street into a disappointing result once it is converted back into European currency.
| DISCLAIMER The information and considerations contained in this article must not be used as the sole or principal basis for making investment decisions. The reader retains full freedom in his or her own investment choices and full responsibility for making them, since only the reader knows his or her own risk tolerance and time horizon. The information contained in the article is provided for information purposes only, and its publication does not constitute and is not to be considered an offer or solicitation of public savings. |
Editor’s note
This article was originally published in Italian on money.it by Flavia Provenzani on November 04, 2026 as «Come investire con la vittoria dei Democratici alle elezioni midterm USA, secondo gli analisti». It has been translated and adapted for an international audience by the Money.it International desk.
