Tag: Illinois

CME Group Trading Halts as CyrusOne Data Center Cooling Failure Freezes 90% of Global Derivatives

CME Group Trading Halts as CyrusOne Data Center Cooling Failure Freezes 90% of Global Derivatives

CME Group halted 90% of global derivatives trading after a cooling failure at CyrusOne’s Aurora, Illinois data center on November 28, 2025, freezing S&P 500, gold, Bitcoin futures and more during thin post-Thanksgiving liquidity.