Allegro Microsystems is trading 5.37% down at $34.36 after broad semiconductor and technology-market selling pressured U.S. equities on September 14, 2026.
- Investors are reacting to warnings about potentially slower AI development and investment.
- Higher oil prices, Treasury yields, geopolitical risks, and Federal Reserve uncertainty are weighing on risk appetite.
- No company-specific Allegro announcement or catalyst was identified.