Allegro Microsystems is trading at $33.02, down 4.32% in pre-market as semiconductor stocks face pressure following concerns over Lam Research’s outlook. - Lam Research’s outlook drew concern over supply constraints and lower China revenue, alongside broader market weakness. - No October 22 company-specific announcement appeared in Allegro Microsystems’ press-release listings; its latest release, on October 20, covered humanoid-robotics sensing and power solutions. - SOXX was down 3.64% pre-market; pre-market volume information was not provided.