Allegro Microsystems is trading 10.08% down at $28.10, with the move appearing tied to pressure across semiconductor and technology shares. - No new company-specific announcement was identified for November 5. - Investors are concerned potential tighter AI and data-center regulation could slow infrastructure investment; Qualcomm’s weak handset-chip results added to industry worries. - Broad market indexes are also lower, reinforcing the risk-off backdrop.