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The Nasdaq Composite fell 5.52% on Nov. 5, while the Nasdaq-100 dropped 6.36%; Reuters put the Nasdaq-100 market-value loss at about $2.5 trillion. Investors focused on whether the midterm results could lead to tighter oversight or higher costs for AI data center projects, but no new federal law has passed and proposed changes remain uncertain.
The Nasdaq Composite fell 5.52% on Thursday, Nov. 5, its steepest daily decline since April 2025, as investors assessed whether the U.S. midterm election results could slow or raise the cost of AI data center construction. The Nasdaq-100 fell 6.36%; Reuters estimated that the index’s companies lost about $2.5 trillion in market value.
Nasdaq’s published closing data put the Composite at 24,315.00, down 1,421.51 points. The Nasdaq-100 closed at 26,629.81, down 1,807.36 points. The Nasdaq-100 tracks the exchange’s 100 largest non-financial companies; the $2.5 trillion estimate reported by Reuters refers to that index, not every company listed on Nasdaq.
The PHLX Semiconductor index dropped 12.25% to 9,011.14. Reuters reported that Nvidia fell 9% and AMD fell 17%, while several data center operators declined by more than 14%. Those moves show that chipmakers and companies tied to data center construction were among the hardest hit, though the figures alone do not establish why any individual stock fell.
The Composite’s closing level was 11.9% below its Oct. 6 record, putting it in correction territory, commonly defined as a fall of at least 10% from a recent peak. Nasdaq’s index history shows that the Nov. 5 loss exceeded the daily declines recorded during the April 2025 tariff shock, including the 5.82% drop on April 4.
AI rules add pressure to a $2.5 trillion Nasdaq rout
Investors weighed possible changes to AI data center oversight, incentives and infrastructure costs. No new federal law has passed, and the policy impact remains uncertain.
The selloff hit AI infrastructure
Chipmakers and data center related companies were among the hardest hit.
What investors are watching
Possible policy changes could affect the cost and pace of new data center projects.
Power and water
Who pays for electricity, water and grid upgrades could shape project economics.
Permits and reviews
Longer reviews could delay construction and affect planned computing capacity.
Tax support
Changes to incentives could make some planned facilities less attractive.
Market moves are not policy outcomes
The election shifted investor expectations, but no specific rule change is reported.
- Nasdaq indexes fell sharply on Nov. 5.
- No new federal data center law has passed.
- Whether oversight or project costs will change.
- Which projects, if any, may face delays.
Signals to watch next
Concrete proposals and project decisions will show whether concerns translate into changes.
Watch for changes to incentives or oversight.
Track approvals or pauses for large developments.
Look for new utility and data center agreements on power and water.
Data Center Costs Move Into Focus
The market reaction puts a policy question at the center of the AI infrastructure trade: who will pay for the power, water and grid upgrades needed to build and operate data centers, and how quickly will permits be approved? If developers face higher costs, fewer tax incentives or longer reviews, some planned projects could become less attractive or take longer to complete. That could affect the companies supplying chips, equipment and electricity, as well as the technology firms building out computing capacity.
Those possible effects are not settled policy. The source material describes investor concern following the election, alongside analyst forecasts about oversight and project costs. It does not report a newly enacted rule requiring developers to pay more or imposing a general pause on construction. For readers following markets, the distinction matters: Thursday’s price moves reflect investors’ changing expectations, not a measured reduction in data center capacity.
Reuters reported that the VIX, a gauge of expected stock-market volatility, recorded its largest increase since December 2024. A rise in the gauge indicates greater demand for protection against market swings; it does not establish that further declines will occur.
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Election Results And Project Approvals
The selloff came two days after the U.S. midterm elections. The source article says Democrats won control of Congress and several governorships, including in states where substantial data center development is planned. Investors may be watching those changes because federal lawmakers and state officials can influence tax incentives, infrastructure approvals and oversight. The source does not identify specific enacted changes resulting from the election.
The market’s response was not uniform on election day. On Wednesday, Nov. 4, the Composite rose 1.44%, Reuters reported, even as data center operators and power companies fell. Amazon and Microsoft each gained about 6% during that session. One strategist told Reuters that existing data centers could become more valuable if fewer new facilities were built. On Thursday, however, Amazon and Alphabet fell 2.2% and Microsoft fell 3.6%, Reuters reported.
The drop also followed a difficult stretch for technology shares. According to the source article’s calculation from Nasdaq index data, the Composite lost 5.3% in October and had fallen more than 500 points on five trading days since mid-October. That backdrop means the election was one focus for investors, but the available reporting does not show that it alone explains every part of the decline.
“Existing data centers become more valuable if fewer new ones get built.”
— A strategist quoted by Reuters
Policy Changes Remain Unsettled
No new federal law changing data center rules is reported in the source material. It also says President Trump retains veto power and that some analysts expect congressional gridlock, which could limit sweeping federal changes. The election results may affect the policy debate, but their practical consequences for permits, tax breaks or construction schedules are not yet clear.
A UBS estimate cited in the source article says about 30% of planned 2028 capacity additions could be at risk. That is an analyst estimate, not an announced cancellation or an official count of projects halted. The source does not provide the underlying project list or explain how the estimate would change under different policy outcomes.
It remains unclear which specific projects, if any, will face delays or higher costs, how state and federal officials will act, and whether investors will continue to treat the election as a central risk. The reported index losses and company share-price declines are market data; explanations of future policy effects remain forecasts or interpretations.
Watch Permits And Cost Proposals
The next indicators are concrete policy and project decisions: whether lawmakers propose changes to incentives or oversight, whether state officials review or pause large developments, and whether utilities and data center companies disclose new agreements over electricity and water costs. Until such measures are announced, investors will be weighing possible outcomes rather than responding to a confirmed nationwide rule change.
Market participants will also have further trading sessions and company updates to assess whether Thursday’s decline reflects a lasting change in expectations or a sharp reaction that eases. The source material provides no forecast for the Nasdaq’s next move. The policy impact on construction timelines and planned capacity remains to be established.
Key Questions
How much did the Nasdaq fall on Nov. 5?
The Nasdaq Composite fell 5.52% to 24,315.00, a loss of 1,421.51 points. The Nasdaq-100 declined 6.36% to 26,629.81.
What does the $2.5 trillion figure refer to?
Reuters estimated that about $2.5 trillion in market value was erased from the Nasdaq-100, which tracks 100 of the exchange’s largest non-financial companies. The figure does not cover every Nasdaq-listed stock.
Did the midterm results change data center rules?
The source material reports no new federal law changing those rules. Investors were weighing possible future changes to oversight, incentives and infrastructure costs.
Is the UBS estimate a confirmed project cancellation?
No. The 30% estimate for planned 2028 capacity additions at risk is an analyst estimate cited in the source article. It is not a confirmed count of projects canceled or halted.
Source: Thorsten Meyer AI
