AI stocks sell off after midterms: Nasdaq falls 5.5% and Nvidia loses almost $450 billion

AI stocks suffered their worst day in more than a year on Thursday, November 5, 2026, and the explanation most investors reached for was political: Democrats had just done well in the midterms, and voters in local ballot measures had rejected data centers almost without exception. The move was large. Whether it signals a real slowdown in the superintelligence buildout is a separate question, and the evidence so far says not yet.

The size of the move

CNBC reports the Nasdaq fell 5.5% on November 5, its worst day since April 2025. Nvidia and Qualcomm each dropped more than 9%, and SpaceX and Tesla each fell more than 9%. AMD, Micron and Applied Materials each lost double digits. Alphabet, Amazon, Meta and Microsoft fell between 2% and 4%. Neocloud stocks such as CoreWeave fell for a second straight day.

Nvidia alone lost almost $450 billion in market value, per CNBC. The report gave no dollar totals for the other decliners.

On Friday the damage spread. Nikkei Asia reported that Asian markets tied to the AI boom plummeted, with South Korea's KOSPI down as much as 8.7% at one point and a circuit breaker activated during the morning session. It attributed the fall to the Wall Street selloff and to investor worry about delays to data center construction after the Democratic midterm performance.

What the market blamed

CNBC lists four causes. First, concern that the AI buildout will slow after the election. Voters opposed data centers in 40 of 41 local ballot measures, according to Ballotpedia and CNBC. Second, a weak current-quarter forecast from Qualcomm. Third, macro and financing pressure: rising interest rates, heavy capital needs and a Democratic sweep in Congress raised fears of too much debt and too little revenue. Fourth, a memory shortage that is raising prices and tightening supply for Qualcomm, Intel and AMD.

Nextgov separately reported on November 5 that Democrats won major victories in the House and Senate in the November 3 midterms, and that an NBC News exit poll found 56% of voters said AI and data centers were a crucial or major factor in their congressional vote.

The Qualcomm wrinkle

Qualcomm's own chief executive pushed back on the demand-fear story. Cristiano Amon said "We don't have a demand issue; it's a supply issue," and added that "If I had more supply, I would probably be doing better." Qualcomm's data center revenue was $650 million in the quarter, according to CNBC.

Elsewhere in the same CNBC report, the picture was mixed. Intel's data center revenue rose 78% and AMD's data center sales more than doubled. Those are results from the quarter already reported, which is a different thing from what customers will spend next year.

What the buyers have said

The hard evidence on spending is the hyperscalers' own guidance, which CNBC describes as extending well past $100 billion a year. We covered the latest round of numbers in our tracker of big tech AI capex. None of those plans has been cut as of November 6, 2026.

What has changed is the politics. Richard Clode, a portfolio manager at Janus Henderson, told CNBC that "There's going to be a knee-jerk reaction, and that could lead to some delays." The Wall Street Journal reported, per CNBC, that Meta President Dina Powell McCormick said building data centers is "going to be harder" after the elections. Local opposition is documented in our tracker of data center moratoria, lawsuits and blocked projects.

Why a price drop is not a buildout drop

Stock prices move on expectations of future profits, not on whether concrete is poured. A 5.5% index fall says investors raised their estimate of risk. It does not say a single gigawatt has been canceled. The things that would show a real slowdown are specific: a hyperscaler cutting capex guidance, a chip order pushed out, a project withdrawn after a permit denial, or a financing round that fails to close.

The ingredients for those exist. Local opposition is strong, interest rates are higher, and the capital needs are large. But the same CNBC report shows chip suppliers still reporting growth in data center sales, and Qualcomm's chief executive blaming scarce supply instead of weak orders.

What the political side adds

The unusual feature of this selloff is that the trigger was not a product or an earnings miss but an election. Nextgov reports that the Chamber of Progress sent a memo to House and Senate Democratic leaders on November 4 listing a federal AI transparency and safety standard as its top priority for 2027, and that Representative Greg Casar called the results "the early tremor of a much bigger AI earthquake." Those are statements of intent, not law. No bill has moved, and the new Congress does not take office until January.

For companies, the practical risk is local rather than federal: permits, zoning and utility rates, which are decided by county boards and state commissions where the ballot results were so lopsided.

Our take

We do not give investment advice and will not predict where prices go next. What we can say is what to watch. Over the next quarter, the signal is capex guidance in the next earnings round, the outcome of local permit fights, and whether the new Congress moves on the data center and safety agenda that members have promised for January. If those hold, November 5 reads as a sharp repricing of political risk. If they crack, it reads as the first day of a different phase of the race.