Cooling failure shuts markets; everyone reassess AI data center resilience

Melissa Palmer

November 28, 2025

CME had to halt all CME Globex futures and options trading for hours due to a cooling failure at a CyrusOne data center, underlining how physical infrastructure can take core markets offline.

This wasn’t a GPU outage, but it’s the same thermal and power risk profile that AI clusters face as densities rise and operators lean on third-party colo.

Vendors pitching AI data centers should read this as another proof point that cooling architecture and operational resilience are now board-level concerns, and the article is worth a closer look for that angle.

Source: CME to Reopen Futures, Options Trading After Halt Caused by Data-Center Issue

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