Lam Research is trading down 11.8% now at $195.31 as broad semiconductor losses reflect fears tighter scrutiny and regulation could slow AI data-center construction. - Reuters reported the broader semiconductor index was down 7.1% as chip and data-center stocks fell after the midterm election results. - Major U.S. indexes also fell sharply, reinforcing the risk-off backdrop. No clear Lam Research-specific announcement explaining the November 5 decline surfaced in the search; the move appears primarily sector-driven.