CME Group
CME Group Technical Outage Jolts Markets on Black Friday, Underscoring Fragility of Financial Infrastructure
Chicago, IL – A significant technical outage at the CME Group (NASDAQ: CME), the world's largest derivatives marketplace, sent ripples through global financial markets on Friday, November 28, 2025. The disruption, stemming from a critical cooling system failure at a Chicago-area data center, brought trading in vital US stock