The U.S. stock market plunged in a single day, with the Nasdaq Composite (NASDAQ: NDAQ) declining 5.5% on November 5th, 2026, wiping approximately trilijonus dolerių from the market capitalization of technology companies. The sell-off was fueled by investor fears that the Democratic victory in midterm elections would slow artificial intelligence (AI) expansion and lead to stricter regulation of data centers, as reported by the BBC.
Here is the math: The Nasdaq’s 5.5% drop was the index’s largest single-day percentage decline since April 2025. The market value erasure was immense, with the “Magnificent Seven” tech giants collectively losing trilijoną dolerių. Nvidia (NASDAQ: NVDA), a key player in AI infrastructure, saw its stock fall more than 9%, while Tesla (NASDAQ: TSLA) and SpaceX dropped by nearly 11% and 8% respectively, totaling daugiau nei 300 mlrd. dolerių in combined value. The selloff was not confined to U.S. shores; it spread to Asian and European markets the following day, with Japan’s Nikkei down 6% and South Korea’s Kospi slumping 6%.
Market Cap Erased by Nasdaq's 5.5% Drop
- The Nasdaq’s 5.5% erased trilijonus dolerių in market cap, marking a significant correction driven by political and regulatory uncertainty.
- The Democratic midterm victory is the primary catalyst, with investors fearing stricter AI and data center regulations could hinder the sector’s growth.
- The Nasdaq is now in a correction zone (down 10% from its recent peak), but the index remains apie 4,6% aukščiau nei metų pradžioje, indicating the underlying trend may still be intact.
The Political Catalyst: A Democratic Sweep Fuels Regulatory Fears
The immediate trigger for the market turmoil was the decisive Democratic victory in the U.S. midterm elections, which gave the party control of both the House of Representatives and the Senate. This political shift has stoked fears that the new Congress will impose stricter regulations on the AI industry, particularly on the data centers that power it. Lrytas reported that President Donald Trump himself blamed the sell-off on the Democrats’ success, posting on Truth Social, “Today the stock market fell because the Democrats had a big success on Tuesday. Very sad, the guilt is yours alone!”
The concern is not abstract. Several newly elected candidates campaigned on platforms opposing the unchecked expansion of data centers, and dozens of ballot measures across the country sought to limit the construction of such facilities. In Texas, for instance, Democratic Governor-elect Gina Hinojosa campaigned on a moratorium for new data center construction.
Global Contagion: How the Selloff Spread from Wall Street to the World
The U.S. market turmoil quickly became a global phenomenon. On Friday, November 6th, the selling pressure moved to Asia, where markets reacted sharply. Japan’s Nikkei index closed 6% lower. The situation was even more dramatic in South Korea, where the Kospi index initially plunged more than 8%, triggering a circuit breaker that temporarily halted trading. The index ultimately closed down 6%, with SK Hynix falling over 10%.
European markets were also affected, though the impact was less severe due to a smaller weighting of technology stocks in their major indices. Major German, French and Spanish indices all ended the day in the red, while London’s FTSE 100 fell 1.01%.
Market Reassessment: Is This a Correction or the Start of a Downturn?
While the one-day selloff was dramatic, the long-term picture for the AI sector remains a subject of intense debate. Analysts point out that even after this drop, the Nasdaq is still apie 4,6% aukščiau nei metų pradžioje and higher than it was a year ago, indicating that the underlying growth trend in AI has not been extinguished. LRT cites Joe Mazzola, a trading strategist at Charles Schwab, who commented, “I think there is reason to be worried, but you also have to remember that the market often overreacts, and then, as the situation settles and a calmer perspective emerges, it starts to recover.”
However, the selloff has also exposed concerns about the financial discipline within the AI industry. Doubts about whether the massive investments in AI will generate sufficient returns had been growing for months before the election. Goldman Sachs research indicates that investment in AI alone is expected to reach trilijoną dolerių in 2026, a staggering figure that has led some to question if such spending is sustainable. The market’s reaction suggests that investors are now demanding clearer proof of profitability.
“The market is currently pricing in a significant political risk premium for the AI sector. While the long-term demand for AI is undeniable, the path to monetization and regulatory acceptance is now clouded by a less favorable political climate.”
Implications for the Broader Economy and the AI Supply Chain
The implications of this market shift extend beyond the technology giants. The selloff of stocks like SK Hynix shows that the market is penalizing the entire ecosystem, not just the software companies.
For everyday consumers, the immediate impact of these stock market fluctuations is likely minimal. The price of consumer technology products like smartphones and computers is not directly tied to daily stock movements. However, the long-term risk lies in potential regulatory hurdles. If the U.S. Congress and other governments globally impose stricter regulations on data centers, it could slow the development and deployment of AI services, potentially affecting everything from advanced research tools to consumer applications that rely on AI. The uncertainty is now the dominant factor, and the market will be watching closely for signals from the new Congress on its regulatory intentions.
What’s Next for Investors and the AI Sector?
The key question now is whether the market’s sharp reaction was a necessary correction or an overreaction to political noise. The market will be looking for clarity from lawmakers on their specific plans for AI and data center regulation. Dan Coatsworth, head of markets at trading platform AJ Bell, told the BBC that the most important question is whether the recovery will hold, and that a clearer picture may only emerge next week.
| Index / Company | Change | Day |
|---|---|---|
| Nasdaq Composite | -5.5% | Thursday, Nov 5 |
| Nvidia (NVDA) | more than -9% | Thursday, Nov 5 |
| Tesla (TSLA) | nearly -11% | Thursday, Nov 5 |
| Nikkei (Japan) | -6.0% | Friday, Nov 6 |
| Kospi (South Korea) | -6.0% | Friday, Nov 6 |
| Nasdaq Composite | +1.1% | Friday, Nov 6 |
