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Physix Frontier · News Briefing Card (Hacker News · Nov 6, 2026)

US AI stocks plunge Nov 5; Nvidia falls 9.26%

KEY FACTS

  • On November 5, 2026, Nvidia closed down 9.26% at $181.60, while AMD fell 17.26%.
  • The Nasdaq Composite fell 5.52% that day, and the Philadelphia Semiconductor Index dropped about 12.25%.
  • Reuters estimates the selloff wiped about $2.5 trillion off Nasdaq market value.
  • SanDisk fell more than 22%, Micron dropped about 17.5%, and CoreWeave lost about 9.8%.
  • UBS estimates that about 30% of new US data center capacity in 2028 could be at risk due to construction pauses.

KEY DATA

9.26%Nvidia closing decline
$181.60Nvidia closing price
about $2.5 trillionNasdaq market value wiped out
about 30%Share of 2028 US data center capacity at risk

PHYSIX OBSERVATION

This selloff is a repricing of valuations and policy expectations, not a collapse in demand. What really matters is power interconnection and permitting progress: project delays will push back GPU and HBM orders, but that does not mean the orders disappear. If operating megawatts and AI revenue remain steady, the selloff is closer to a valuation hit; only if order conversion weakens in tandem would it be a structural signal.

Source: Hacker News report