Lam Research is trading 10.9% down today at $259.89 as part of a sharp semiconductor selloff linked to worries about heavy AI-related capital spending and rising competition from Chinese chipmakers.

  • Reports indicate a state-backed Chinese firm has begun mass-producing advanced immersion DUV lithography tools, directly pressuring U.S. chip equipment manufacturers.
  • The decline tracks a broader plunge across the semiconductor and AI sectors as investors reassess the sustainability of high-cost AI infrastructure investments.