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The Nasdaq Composite fell 5.52% on Nov. 5, its steepest daily decline since April 2025, while chip stocks fell more sharply. Reuters attributed the selloff in part to investor concerns that election results could bring closer scrutiny and higher costs for planned AI data centers; no new federal restrictions have passed.
The Nasdaq Composite fell 5.52% on Thursday, Nov. 5, closing at 24,315.00 in its steepest one-day decline since April 2025. Reuters reported that investors were weighing whether Democrats’ midterm gains could bring tighter scrutiny, fewer incentives or higher infrastructure costs for planned AI data centers; no new federal restrictions have been enacted.
Nasdaq’s published index data puts the Composite down 1,421.51 points for the session. The Nasdaq-100, which tracks 100 of the exchange’s 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 Nasdaq-100, not every company listed on Nasdaq.
Technology infrastructure stocks suffered some of the sharpest losses. The PHLX Semiconductor index fell 12.25% to 9,011.14. Reuters reported Nvidia shares dropped 9% and AMD fell 17%, while several data center operators lost more than 14%. Amazon and Alphabet fell 2.2% and Microsoft declined 3.6%, according to Reuters.
The Composite closed 11.9% below its Oct. 6 record, meeting the commonly used definition of a market correction: a fall of at least 10% from a recent peak. The index’s 5.52% daily loss was larger than its decline during any single session of the April 2025 tariff shock, according to the exchange data cited in the source material.
Nasdaq’s sharp selloff puts AI data center rules in focus
Investors weighed possible future scrutiny and higher infrastructure costs after election results. No new federal restrictions have passed.
A broad technology selloff
Chip and technology shares fell sharply alongside the indexes.
What investors are weighing
Possible policy changes could affect project costs and timing.
Closer project reviews
Longer reviews could delay data center construction.
Fewer tax breaks
Investors are considering whether incentives could be reduced.
Higher power and water costs
Developers may face more of the cost of utilities and infrastructure.
Confirmed facts and open questions
Election concerns have not yet become new federal restrictions.
- No new federal law restricting data center construction has passed.
- The Nasdaq Composite closed 11.9% below its Oct. 6 record.
- Whether proposals will change permits, incentives or utility costs.
- How much of the selloff reflected data center concerns.
What to watch next
Concrete decisions will show whether investor concerns translate into project changes.
Watch for legislation, agency action or state decisions affecting specific projects.
Developers and technology companies may clarify project plans and costs.
Later sessions can show whether Thursday’s losses persist.
Data Center Costs Enter the Market Debate
The selloff shows that investors are considering how political decisions could affect the pace and cost of the AI infrastructure buildout. Data centers depend on large power supplies, transmission lines, water and local approvals. If projects face longer reviews, fewer tax breaks or a larger share of utility costs, developers could spend more or build later. Those possibilities could affect expected returns for data center operators, chipmakers and the technology companies financing new capacity.
That is an investor concern, not a confirmed policy change. The market’s response also does not establish that data center rules caused every decline: the session included steep losses across semiconductor and large technology shares. Reuters reported that the VIX, a gauge of expected market volatility, recorded its largest increase since December 2024.
For readers tracking retirement accounts or technology stocks, the distinction matters. A sharp index decline records what shares were worth at the close; it does not by itself confirm a lasting change in AI demand or the eventual impact of election results on construction plans.
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Election Results and Project Approvals
The selloff came two days after the U.S. midterm elections. The source report says Democrats won control of Congress and several governorships, including in states where significant data center construction is planned. Investors may be anticipating more attention to the electricity, water and tax arrangements tied to those projects.
The market’s reaction developed over two sessions. On Wednesday, Nov. 4, the Composite rose 1.44%, even as Reuters reported that data center operators and power companies fell. Some investors saw a possibility that restrictions on new construction could benefit existing facilities. By Thursday, that interpretation had given way to broader selling: Amazon and Microsoft, which had gained about 6% during Wednesday’s session, also declined.
The Composite’s losses were already uneven before the election response. It fell 5.3% in October, and the source’s review of Nasdaq data counts five daily drops of more than 500 points from mid-October through Nov. 5. That recent volatility offers context for Thursday’s move, but does not identify a single cause.
““deepest one-day drop since ‘Liberation Day’ in April 2025.””
— Reuters
Policy Changes Remain Unconfirmed
No new federal law restricting data center construction has passed, and the election results do not by themselves change existing permits or project plans. The source material says President Donald Trump retains veto power and that some analysts expect congressional gridlock, which could limit major federal changes.
Several possible effects remain forecasts: increased congressional oversight, reduced tax incentives, requirements for developers to pay more of power and water costs, or pauses on large projects by newly elected governors. A UBS estimate cited in the source says about 30% of planned capacity additions for 2028 could be at risk. That is an analyst estimate, not a government decision or a confirmed count of canceled projects.
It is not yet clear which proposals, if any, will advance; how state and federal decisions would affect individual projects; or how much of Thursday’s decline reflected data center concerns rather than other market factors. The $2.5 trillion figure is Reuters’ market-value calculation for the Nasdaq-100, not a measure of money withdrawn from the market.
Watch for Rules and Project Reviews
Investors will be looking for concrete signals from the new Congress and state governments, including proposals on permitting, tax incentives, electricity costs and water use. The next important evidence will be formal legislation, agency action or state-level decisions affecting specific projects. Until such steps occur, forecasts about delays and capacity at risk remain uncertain.
Market participants will also watch subsequent trading sessions and company disclosures for signs of whether Thursday’s losses persist. The source material does not identify a specific upcoming policy deadline or a confirmed next announcement. Any new project guidance or government proposal could clarify how much of the election-related concern translates into changes for developers and technology companies.
Key Questions
How much did the Nasdaq Composite fall?
It fell 5.52%, or 1,421.51 points, to close at 24,315.00 on Nov. 5, 2026.
What does the $2.5 trillion figure refer to?
Reuters estimated that roughly $2.5 trillion in market value was erased from the Nasdaq-100, an index of 100 large non-financial companies. It is not a figure for every Nasdaq-listed stock.
Have new AI data center restrictions been passed?
No. The source material says no new federal law has passed. Tighter oversight, reduced incentives and higher infrastructure costs are investor concerns and analyst scenarios, not confirmed policy changes.
What is the estimate that 30% of 2028 capacity could be at risk?
It is a UBS estimate cited in the source report about planned capacity additions for 2028. It does not mean that 30% has been canceled or formally blocked.
Source: Thorsten Meyer AI
