Vicor is trading 8.5% up at $231.68 in after-hours trading, extending a multi-day rebound fueled by broader AI-chip optimism and improved sentiment across semiconductor names.
- The move follows a 4.3% gain during the regular session on August 3, 2026, as major indices rallied.
- The stock appears to be riding strong sector and market momentum rather than responding to any fresh company-specific catalysts.