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The Nasdaq Composite fell 5.52% on Nov. 5, its steepest one-day decline since April 2025, while the Nasdaq-100 lost 6.36%. Investors weighed whether election results could bring tighter oversight, fewer incentives or higher costs for AI data center projects, but no new federal restrictions have been enacted.
The Nasdaq Composite fell 5.52% on Thursday, Nov. 5, its largest one-day decline since April 2025, as investors assessed how the U.S. midterm election results could affect AI data center construction. The selloff followed Democratic gains in Congress and several governorships, but the prospect of tighter project oversight or higher development costs remains a concern raised by analysts, not a change in law.
Nasdaq’s closing data put the Composite at 24,315.00, down 1,421.51 points. The Nasdaq-100, which tracks the exchange’s 100 largest non-financial companies, fell 6.36% to 26,629.81. Reuters estimated that the Nasdaq-100 decline erased about $2.5 trillion in market value; that figure refers to the index’s companies, not every stock listed on Nasdaq.
Technology and infrastructure-linked shares came under particular pressure. The PHLX Semiconductor index dropped 12.25%. Reuters reported that Nvidia fell 9% and AMD 17%, while several data center operators lost more than 14%. Amazon and Alphabet each fell 2.2%, and Microsoft declined 3.6%, according to the source account. The Composite closed 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.
The immediate concern was whether changes in political control could make new data centers harder or more expensive to build. Analysts cited in Reuters and The National pointed to possible changes in permitting, tax incentives, and responsibility for power and water costs. Those are potential policy directions, not confirmed measures. The source material reports no new federal law imposing such restrictions.
Why AI Data Center Rules Loomed Over Nasdaq’s Worst Day
Investors weighed whether election results could make AI data centers harder or more expensive to build. No new federal restrictions have been enacted.
What investors are weighing
Potential policy shifts could affect project costs and timelines.
More oversight
Longer approval processes could change construction plans.
Fewer tax breaks
Changes could alter expected returns on new facilities.
Higher resource costs
Power and water responsibilities may affect project economics.
Market pressure spread
Technology and infrastructure-linked shares fell sharply.
Policy status
Election results prompted concern, while possible changes remain unsettled.
- Democrats gained control of Congress and several governorships.
- No new federal law restricting data center construction is reported.
- Whether permits, incentives or infrastructure costs will change.
- Whether projects will be delayed, canceled or proceed as planned.
What to watch next
Concrete decisions and company updates will show whether concerns affect the buildout.
- Federal, state and local decisions on permits and tax treatment.
- Power agreements, project schedules and capital spending disclosures.
- UBS’s estimate that about 30% of planned 2028 capacity additions could be at risk is a forecast, not confirmed cancellations.
Policy Risk Meets AI Spending
The decline shows that investors are weighing political and infrastructure risks alongside expectations for AI demand and company earnings. Data centers require large amounts of electricity, water, land and new grid capacity. If projects face longer approval processes or developers must absorb more of those costs, construction plans and expected returns could change.
That matters beyond technology shares because the buildout connects major cloud and chip companies with utilities, local governments and communities hosting facilities. A slower rollout could affect capital spending and the pace at which companies add computing capacity. The market move alone, however, does not establish that construction will slow or that a particular policy will be adopted.
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Election Results and Project Approvals
Democrats won control of Congress and flipped several governorships in the Nov. 3 midterms, according to the supplied source. The political shift drew attention to states where substantial new data center capacity is planned, and to the local and state decisions that can affect power connections, permits and tax arrangements.
The market response had already begun to vary before Thursday’s drop. On Wednesday, Nov. 4, the Composite rose 1.44%. Reuters reported that data center operators and power companies fell that day, while Amazon and Microsoft each rose about 6% during the session. One strategist told Reuters that existing data centers could become more valuable if fewer new facilities were built. On Thursday, technology and infrastructure shares fell broadly.
The Composite’s last larger daily decline was 5.82% on April 4, 2025, during the tariff shock, based on Nasdaq index data cited in the source. Reuters described Thursday’s fall as the deepest since the April 2025 market turmoil. The source also reports that the VIX, a measure of expected market volatility, had its largest increase since December 2024.
““deepest one-day drop since ‘Liberation Day’ in April 2025””
— Reuters
Policy Proposals Still Unsettled
No new federal law governing AI data center construction is reported in the source material. It is not clear which proposals, if any, will advance, how state and local officials will act, or whether projects will be delayed or canceled. The president retains veto power, and analysts cited in the source expect congressional gridlock may limit broad legislative changes.
A UBS estimate that about 30% of planned 2028 capacity additions could be at risk is a forecast, not an approved policy or a confirmed count of canceled capacity. The source does not specify a project-by-project breakdown or establish how the estimate translates into actual construction. The market decline also cannot by itself show how much of investors’ response was driven by election policy concerns versus other factors.
Permits, Costs and Capacity Plans
Investors will be watching for concrete policy proposals and decisions by federal, state and local authorities on permits, tax treatment and infrastructure costs. Companies’ disclosures about project schedules, power agreements and capital spending may also help show whether the concerns are changing buildout plans.
Until those decisions and company updates emerge, the potential effect on data center capacity remains uncertain. The Nov. 5 market move records investor concern; it does not settle what rules will change or how quickly projects will proceed.
Key Questions
How much did the Nasdaq Composite fall?
It fell 5.52% on Nov. 5, 2026, closing at 24,315.00, down 1,421.51 points, according to Nasdaq index data cited in the source.
What does the $2.5 trillion figure refer to?
Reuters estimated that the Nasdaq-100’s 6.36% decline erased about $2.5 trillion in market value. The figure applies to companies in that index, not all Nasdaq-listed stocks.
Did the midterm results change data center rules?
The source reports no new federal law changing the rules. Analysts discussed possible tighter oversight, fewer incentives and higher costs, but those remain potential policy changes.
Is 30% of planned 2028 capacity already canceled?
No. The source attributes to UBS an estimate that about 30% of planned 2028 capacity additions could be at risk. It is a forecast, not confirmation that projects have been canceled.
Source: Thorsten Meyer AI
