Stock Market Today, Nov. 5: Nasdaq Suffers Worst Day in 18 Months as AI Trade Comes Under Fire

Nov 5, 2026
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The Nasdaq Composite (^IXIC -5.52%) dropped 5.52% to 24,315 as it entered correction territory, while the S&P 500 (^GSPC -4.36%) tumbled 4.33% to 7,356 in its worst session since early 2025 and the Dow Jones Industrial Average (^DJI -3.44%) plunged 3.44% to 51,523.

Gold rose 0.46% to $4,091.80 as of U.S. market close, while the 10-Year Treasury yield fell 0.05% to 4.90% as the Technology sector dropped 5.54% relative to a more resilient Consumer Defensive sector and a 5.18% decline in Industrials.

Today’s biggest moves

Nvidia (NVDA -9.26%) and Advanced Micro Devices (AMD -17.26%) plummeted as investors are de-risking semiconductor holdings following the Democratic midterm sweep, while Tapestry (TPR +7.07%) shares jumped nearly 12% on a raised outlook. Meanwhile, TripAdvisor (TRIP -27.65%) shares dove 18% following quarterly misses and news of executive departures.

What this means for investors

Thursday’s sharp sell-off reflects a growing reassessment of the artificial intelligence (AI) investment cycle. After years of soaring valuations and aggressive infrastructure spending, investors are increasingly questioning whether the billions being poured into AI data centers will generate sufficient returns to justify the investment. The recent midterm elections have added another layer of uncertainty, particularly around potential regulatory restrictions on future data-center development.

Importantly, the sell-off doesn’t necessarily signal weakening demand for AI. Rather, Wall Street appears to be reconsidering how much future growth is already reflected in stock prices. With technology companies accounting for a substantial share of major indexes, selling pressure across semiconductors and AI infrastructure has quickly spread to the broader market.

For investors, the distinction between AI spending and AI profitability is becoming increasingly important. Companies with strong cash flows, sustainable earnings growth, and reasonable valuations may be better positioned to weather continued volatility, while those relying on aggressive growth expectations could face further pressure.

RJ Fulton has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Advanced Micro Devices, Nvidia, and Tripadvisor. The Motley Fool recommends Tapestry. The Motley Fool has a disclosure policy.

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