Lam Research is trading 5.9% down at $5.62 on October 13, 2026, amid a semiconductor sell-off as investors react to reports of CXMT memory-design progress and AI investment and valuation concerns.
- Reuters cited possible triggers: CXMT competition and Broadcom CEO Hock Tan’s casino-like AI investing warning.
- No clear Lam Research-specific announcement explaining the intraday move surfaced. Shares logged six consecutive lower closes through October 12, while the S&P 500 gained 1.1%, suggesting the earlier slide was not simply market-wide.