Wall Street spent Wednesday celebrating divided government. By Thursday it had decided divided government is a problem — at least for the companies selling shovels into the AI gold rush.

The Nasdaq Composite fell 5.52% to 24,315.00, its worst session since April 2025, and closed more than 10% below the record 27,599.89 it set on October 6. That is a correction by the standard definition, and the second one the index has suffered this year. The S&P 500 fell roughly 4%, and the Dow dropped 1,833 points, surrendering the 1,569 it had gained a day earlier. CNN put the market value destroyed on the day at about $2.5 trillion.

The selling was concentrated exactly where the AI trade was concentrated. An index of chipmakers fell 12.3%, its worst day in roughly six and a half years. Nvidia dropped 9.3%, erasing its gains for the year. The Nasdaq 100 fell 6.36%, its worst session since March 2020. Qualcomm lost 9.5% after a weak smartphone-chip forecast in which rising memory costs did much of the damage. CoreWeave fell 10% — now 76% below its June 2025 peak — and Nebius 15%, 58% below its June high. The VIX jumped about 70%, its sharpest one-day move in nearly two years, and all eleven S&P sectors closed lower.

Two pressures arrived at once, and they are not the same pressure.

The first is political. Democrats swept the midterms, and in Texas governor-elect Gina Hinojosa had campaigned on a temporary moratorium on new data-center permits and on eliminating tax incentives for data-center builders — in the state where Google, Meta, Oracle and OpenAI have staked enormous capacity. UBS told clients that about 30% of the data-center capacity expected to come online in 2028 is now at risk of delay. Nomura made a related point with a longer fuse: much of 2027's capacity is already under construction, so the real exposure begins in 2028.

The second is financial, and it was visible before anyone voted. The neoclouds — companies that borrow money to buy GPUs and rent them out — were already the weak point. CoreWeave, Nebius and IREN each fell at least 30% in October as credit markets tightened, and CoreWeave's five-year credit default swap spread has pushed past 1,100 basis points. JPMorgan's James Sullivan framed the split for CNBC as a cost-of-capital story: hyperscalers with diversified cash flows can fund themselves, and if new supply is constrained, the capacity they already own is worth more. That logic produced a strange Wednesday in which Microsoft and Amazon rose more than 6% while CoreWeave fell 10% — before Thursday sold the whole complex.

Not everyone read the week as a catastrophe. Ed Yardeni of Yardeni Research told CNN a slowdown is welcome. "We want a slowdown in the AI buildout. It was too frenzied and speculative," he said. "It's better to let air come out of the AI bubble than let it burst." Keith Lerner of Truist argued that the risk-reward for long-term investors is now improving.

The global reaction shows how much of the world's equity risk sits in this single trade. South Korea's Kospi fell nearly 9% at Friday's open, tripping a 20-minute trading halt. Money ran to safety: the 10-year Treasury yield fell to 4.84%, a two-month low.

What Thursday actually repriced is narrower than "AI is over". It repriced permission — the assumption that a company can build a gigawatt campus wherever it can buy the land — and it repriced leverage, the assumption that the money to do so will always be available at a reasonable price. Neither was ever a law of physics. Both had simply stopped being questioned.

The next test comes Friday with the October jobs report, into a Fed that already raised rates in September and a market pricing another increase in December.

Sources