CME halts some trading after data centre cooling failure
By Josh White
Date: Friday 28 Nov 2025
(Sharecast News) - The Chicago Mercantile Exchange was forced to halt trading on Friday after a cooling failure at one of its data centres disrupted access to key derivatives and foreign exchange platforms.
The outage brought activity on CME's Globex futures and options markets, its EBS FX venue and BMD markets to a standstill in the early hours of US trading.
A CME spokesperson told CNBC the interruption stemmed from a cooling issue at facilities operated by data-centre provider CyrusOne.
"Support is working to resolve the issue in the near term and will advise clients of Pre-Open details as soon as they are available," the spokesperson said.
The exchange cautioned that price updates may take time to normalise once trading resumes.
By 0357 ET (0857 GMT), contracts including WTI crude, US 10-year Treasury futures and S&P 500 futures had not been refreshed, according to LSEG data quoted by CNBC.
CME, the world's largest exchange operator by market value, handles futures and options across agricultural products, energy, metals and equity indices, making the outage one of the most far-reaching in recent years.
Kathleen Brooks, research director at XTB, said the disruption risked amplifying already fragile trading conditions.
"Trading could be more volatile than usual today, as US markets open for half day and liquidity is likely to be thin.
"Added to this, a disruption on the CME trading exchange, could also affect trading across FX, stocks, commodities and some bonds," she noted.
"This closure ultimately means that liquidity will be even thinner than usual on the Friday of Thanksgiving.
"If there is any sensitive market news flow or events, then moves could be exacerbated by liquidity issues, and there could be more volatility as a result."
Reporting by Josh White for Sharecast.com.
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