US stocks fell sharply on Thursday, November 5, 2026, as investors sold shares in artificial intelligence (AI), semiconductor, and other technology companies. The sell-off spread to major US stock indexes and raised concerns about expensive AI-related stock valuations, future data center spending, and possible changes in US technology policy.
The technology-heavy Nasdaq Composite index dropped approximately 5.5% on November 5, closing at 24,315 points. The S&P 500 fell 4.4%, while the Dow Jones Industrial Average declined by approximately 1,833 points, or 3.4%. The losses affected major technology companies, including Nvidia, Advanced Micro Devices (AMD), Tesla, and several semiconductor manufacturers.
The November 3 US midterm elections added another source of uncertainty. Following the election results, some investors worried that lawmakers could introduce tighter oversight of artificial intelligence companies and large data center projects. However, these concerns involved possible future policy changes rather than new regulations already introduced or approved.
Investors also questioned whether technology companies would generate enough revenue and profit from artificial intelligence services to justify their large investments in chips, servers, and data centers. The possibility of stricter regulations added to these concerns, although the market sell-off cannot be attributed to any single factor.
Semiconductor companies experienced some of the steepest declines. Nvidia shares dropped approximately 9.3% on November 5, while AMD lost more than 17%. Micron Technology also suffered a sharp decline as investors sold shares connected to the rapidly growing AI industry. These losses came as chipmakers continued expanding their manufacturing capabilities, including Nvidia and AMD’s advanced chip packaging plans to support future AI computing demand.
The sell-off was particularly significant because AI companies had helped drive much of the stock market’s growth during 2026. Strong demand for advanced processors, AI servers, and cloud infrastructure had pushed several technology stocks to high valuations. However, concerns about rising infrastructure costs also increased as major technology companies expanded their investments. These financial commitments are explained in TechBonafide’s coverage of Big Tech’s 2026 data center spending plans, which include substantial investments in computing equipment, cloud infrastructure, and AI development.
The sharp decline also highlighted growing concerns about whether future AI earnings would justify the high market values of technology companies. Even businesses reporting strong demand for advanced chips and cloud services can experience falling share prices when investors become less confident about their expected future profits.
The market downturn also affected global technology stocks. Asian semiconductor companies faced selling pressure as concerns about the US technology sector spread across international markets. Investors became more cautious about businesses closely connected to AI development and data center expansion.
Despite the sharp losses, US technology stocks recovered some ground during regular trading on Friday, November 6. The Nasdaq Composite gained approximately 1.1%, while the S&P 500 increased 0.3%. The Dow Jones Industrial Average, however, declined by around 0.5%. Earlier in the day, Nasdaq-100 futures ahead of Friday’s opening bell had already shown signs of renewed interest in AI and semiconductor stocks, although futures movements do not guarantee the final direction of regular trading.
Several major chipmakers, including Nvidia and AMD, rebounded as investors returned to technology shares following Thursday’s heavy selling. The recovery provided some relief, but it did not erase the losses recorded earlier in the week.
The Nasdaq Composite finished the week approximately 3.4% lower and remained in correction territory, generally meaning an index has declined at least 10% from a recent market high. It also recorded its fourth consecutive weekly decline. The Nasdaq Composite should not be confused with the Nasdaq-100, which tracks a smaller group of major Nasdaq-listed companies. The broader market sell-off also resulted in an estimated $2.5 trillion wiped from Nasdaq-100 companies’ market value, highlighting the scale of losses among leading technology businesses.
Another important factor influencing financial markets was the US Bureau of Labor Statistics’ October 2026 employment report, released on November 6. The report showed that the US economy added 165,000 jobs in October, while the unemployment rate declined to 4.1% from 4.2% in September. The stronger-than-expected hiring figures encouraged investors to reconsider the possibility of higher interest rates, although the employment report itself did not announce any change in Federal Reserve policy.
Higher interest rates can create challenges for technology companies because borrowing becomes more expensive, particularly for businesses financing large AI infrastructure projects. According to the Federal Reserve’s October 28, 2026 policy statement, the central bank maintained its benchmark interest rate target between 3.75% and 4%. Investors remain sensitive to possible future interest-rate changes because higher borrowing costs and lower valuations of expected future earnings can place additional pressure on technology stocks.
The November 5 stock market sell-off highlighted the growing influence of artificial intelligence companies on major US stock indexes. Large technology businesses continue investing heavily in advanced processors, cloud services, and data centers, while investors closely monitor the costs of these projects and how quickly they could generate profitable returns.
Investors will now closely watch upcoming economic reports, Federal Reserve decisions, and technology company announcements to understand whether the market can recover further or face another period of heavy selling.
Friday’s rebound recovered only part of Thursday’s heavy losses. The next trading sessions will help show whether AI and semiconductor stocks can stabilize as investors evaluate company earnings, potential regulatory changes, inflation reports, and Federal Reserve policy decisions. For now, the recent market decline demonstrates how quickly changing expectations can affect companies connected to the artificial intelligence industry.
