Why Is Corning (GLW) Stock Down 13.70% Today Sep 14? $2B Share Sale Plan and AI Selloff Pressure Shares

Corning (GLW) fell 13.70% to $143.60 on September 14, 2026, after its $2 billion at-the-market equity program became the central company-specific concern. This draft examines the session, the sector backdrop, downside risks, and the levels traders are watching.