Why Is Nebius Group (NBIS) Stock Price Up 34.14% Today, August 12? Q2 Results Validate AI Demand

Nebius Group shares surged after Q2 results showed 454% YoY revenue growth to $582.3m, a swing to positive adjusted EBITDA, and maintained 2026 guidance, reinforcing evidence that AI-cloud demand and operating leverage are scaling. The move appears company-specific but was supported by broader AI-infrastructure strength, suggesting improved risk appetite within the theme. Near-term focus shifts to execution risk: converting capacity buildout into durable utilization, pricing, and margins.