A rare freeze at CME Group’s data centers halted trading in key U.S. futures markets, offering a jarring reminder of how fragile the plumbing of global finance can be. The outage arrived on an otherwise quiet post-Thanksgiving session, just as investors were grappling with uneven economic signals and the kickoff to the holiday shopping season. With November’s market fate still hanging in the balance, the episode underscores how even brief disruptions can ripple through a system already searching for direction. An unexpected paralysis at CME Group, the world's largest derivatives marketplace, jolted financial markets. A cooling failure at the firm's CyrusOne data centres late on Thursday froze trading in futures tied to America's flagship equity benchmarks, as well as a swathe of currencies and commodities.

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