Lam Research is trading 6.5% down at $5.03 as the semiconductor sector faces a sharp pullback following reports of advanced chipmaking progress by Chinese competitors and concerns over heavy AI infrastructure spending.

  • The stock extended a 12.8% decline from July 28, 2026, as investors continue to engage in sector-wide profit-taking.
  • Market sentiment is being pressured by mounting worries regarding the long-term sustainability of AI-driven chip demand.