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TL;DR
The Nasdaq Composite fell 5.52% on Nov. 5, while the Nasdaq-100 dropped 6.36%, as investors reacted to election results and the prospect of greater scrutiny for AI data center projects. The selloff reflects concern about permits, power costs and tax incentives, but no new federal law has passed and many proposed changes remain uncertain.
The Nasdaq Composite fell 5.52% on Thursday, Nov. 5, its steepest one-day decline since April 2025, as investors weighed whether election results could bring tighter oversight of AI data center construction. The Nasdaq-100 dropped 6.36%, and Reuters estimated that the fall erased about $2.5 trillion in market value from companies in that index. No new federal restrictions have been enacted; concerns about future rules, project approvals and infrastructure costs are driving the uncertainty.
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 $2.5 trillion figure reported by Reuters refers to estimated market value lost among the Nasdaq-100’s 100 largest non-financial companies, not all stocks listed on Nasdaq.
The decline was especially sharp in chip stocks. The PHLX Semiconductor index fell 12.25%. Reuters reported Nvidia shares fell 9% and AMD shares 17%, while several data center operators lost more than 14%. Amazon and Alphabet fell 2.2% and Microsoft fell 3.6%, according to the source report. The Nasdaq Composite closed 11.9% below its Oct. 6 record, a decline that meets the usual definition of a market correction.
The election-related concern is that incoming officeholders could affect the conditions needed to build data centers, including permits, utility connections and tax incentives. Reuters and The National reported that Democrats won control of Congress and that Democratic candidates flipped several governorships. The incoming Texas governor has pledged a moratorium on new data center construction, while incoming governors in Georgia and Ohio have pledged pauses on large projects, The National reported. Those are campaign commitments, not enacted policy.
Infographic 01 · The day in numbers
The Nasdaq's worst day in 19 months
Chips and data center builders led the fall. The dollar figure in the headlines belongs to the Nasdaq-100, the 100 largest non-financial companies on the exchange.
Nasdaq Composite on Thursday, 5 November 2026: down 1,421.51 points to 24,315.00. The biggest one-day fall since 4 April 2025, 19 months earlier.
The five worst Composite days since March 2025
Daily change, closing values
Sources: Nasdaq Global Indexes (COMP, NDX, SOX closing data, retrieved 6 Nov 2026) · Reuters, 5 Nov 2026 (via The Straits Times). History checked back to 25 Mar 2025. Market value is Reuters’ calculation. Not investment advice.
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How Data Center Costs Could Shift
The market reaction reflects the scale of planned investment in AI infrastructure and the dependence of data centers on electricity, water, land and permits. If projects face longer approval processes, reduced tax incentives or higher utility costs, developers may delay construction or spend more to complete it. That could affect data center operators and power suppliers directly, while also changing expectations for chipmakers and large technology companies that are investing in AI capacity.
The selloff does not establish that construction will slow or that new restrictions will take effect. It shows that investors are pricing in the possibility of added costs and uncertainty. A UBS estimate cited in the source material suggested about 30% of planned 2028 capacity additions could be at risk; that is an analyst estimate, not a confirmed project cancellation or government decision. For readers following the market, the distinction matters: the reported index losses are measured outcomes, while the policy effects remain prospective.
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Election Results and Project Approvals
The selloff followed a mixed session on Wednesday, Nov. 4. The Nasdaq Composite rose 1.44%, even as Reuters reported that data center operators and power companies declined. Amazon and Microsoft were each up about 6% during that session. One interpretation reported by Reuters was that existing data centers might benefit if fewer new facilities were built. That logic did not hold the following day, when technology and infrastructure-related shares fell broadly.
According to The National, Democrats flipped five governorships: Texas, Georgia, Ohio, Iowa and Nevada. Its analysis of Cleanview project data said the states account for 37% of planned U.S. data center capacity, with Texas representing 22.8%. Those figures describe planned capacity, not facilities already operating or guaranteed to be built. Governors can influence state policy and appoint utility regulators, whose decisions can affect electricity rates and grid connections; local governments also have roles in land use and permits.
The source report also said voters in small towns across 10 states considered local data center measures, with unofficial results showing 46 of 47 measures opposing projects through proposed bans, size limits or pauses. Those local results are separate from federal policy and may not all have the same legal status or effect.
“The Nasdaq’s “deepest one-day drop since ‘Liberation Day’ in April 2025.””
— Reuters, describing the Nov. 5 market session
Policy Changes Remain Unsettled
No new federal law restricting AI data centers had passed, according to the source material. The timing and content of any congressional hearings, investigations or legislation are not yet clear. Even if Democrats control both chambers, President Trump retains veto power, and analysts cited in the report expect political gridlock could limit sweeping changes.
It is also unclear which state or local proposals will become binding rules, how incoming governors will carry out their pledges, and whether utility regulators will change rates or grid-connection policies. The estimate that roughly 30% of planned 2028 capacity additions could be at risk is a forecast; the source does not establish that those projects have been delayed or canceled. The immediate market decline is confirmed by closing data, but its precise cause cannot be reduced to election policy alone.
Watch Permits, Hearings and Utility Rules
Investors and data center developers will be watching for committee priorities in the new Congress, any hearings or investigations, and whether state officials act on their campaign pledges after taking office. At the state and local level, decisions on permits, tax incentives, land use, electricity prices and grid access will help show whether the concerns translate into changed project economics.
For markets, upcoming company disclosures may provide more detail on construction schedules, infrastructure spending and expected power costs. Until specific rules or project decisions emerge, analysts’ capacity estimates should be treated as scenarios rather than confirmed outcomes. The next policy steps and the durability of Thursday’s market reaction remain open questions.
Key Questions
How much did the Nasdaq fall on Nov. 5?
The Nasdaq Composite fell 5.52% to 24,315.00. The Nasdaq-100 fell 6.36% to 26,629.81, according to Nasdaq’s closing data cited in the source material.
What does the reported $2.5 trillion loss refer to?
Reuters estimated about $2.5 trillion in market value was erased from the Nasdaq-100’s 100 largest non-financial companies. It does not describe every company listed on Nasdaq.
Have new federal restrictions on data centers been passed?
No. The source material says no new federal law had passed. Concerns relate to possible future oversight and policy changes, alongside state and local proposals.
Could election pledges halt data center construction?
Some incoming governors have pledged pauses or a moratorium, but pledges are not enacted policy. Whether they lead to formal action, and how that action might affect individual projects, remains unclear.
Source: ThorstenMeyerAI.com
