Allegro Microsystems is trading at $41.28 (-6.71%) after a broad risk-off move driven by fading U.S.-Iran peace prospects, higher oil prices, and multi-year Treasury yield highs.
- Semiconductor stocks are broadly lower as rising yields pressure growth-sensitive valuations.
- The Nasdaq Composite is down 1.33%, while the semiconductor sector is down 2.78%.
- Reuters reported that elevated oil prices and bond yields pressured technology and chip-related shares on August 18, 2026; no clear company-specific catalyst was identified.