CyrusOne bolsters cooling after CME trading disruption

Thursday, December 04, 2025 at 11:00 UTC+01:00 (+0100), United States, Aurora, Illinois

News category : Market Structure and Financial Stability Events

Data-center operator CyrusOne announced upgrades to cooling capacity and redundancies at its Chicago-area facility in response to a cooling failure that had earlier disrupted CME Group's electronic trading. The outage had temporarily halted trading across a wide swath of futures and options, interrupting price discovery and hedging. Market participants called the incident a reminder of the systemic vulnerability posed by concentrated third-party infrastructure. CyrusOne's remedial steps aim to reduce recurrence, but the episode prompted regulators, exchanges and clearing firms to review contingency plans and third-party oversight practices to limit operational contagion in critical market windows.

Overall market impact

Strong bearish market impact - strength score : 88/100

Detailed breakdown of market impact over instruments, sectors, and asset classes

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Impacted instruments :

Equity index futures

Commodity futures

FX futures

Interest-rate futures

Derivatives liquidity

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