Trading on the Chicago Mercantile Exchange (CME) was briefly halted overnight after a cooling system failure at one of its data centers caused a global outage.
The problem, traced to CyrusOne’s Chicago facility, disrupted futures and options markets across several asset classes. CME said all systems were fully restored and trading resumed by 8:30 a.m. ET.
The issue came during a quiet post-holiday trading day, helping to limit market impact. “It could have been much worse,” said Art Hogan, chief market strategist at B. Riley Wealth.
Contracts affected by the outage included:
- S&P 500, Nasdaq 100, Dow Jones, and Russell 2000 futures
- SOFR interest rate futures
- Euro, Japanese yen, and British pound FX contracts
- WTI crude, Comex copper, Comex gold, and Henry Hub natural gas
CyrusOne said engineers worked overnight to restore cooling and bring systems back online. CME confirmed that “all markets are open and trading normally.”
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