CME Group begins restoring operations after global outage

Published 28/11/2025, 13:12
© Reuters.

Investing.com -- The Chicago Mercantile Exchange has started to gradually restore operations following an hours-long outage that caused disruptions across global markets.

According to a notice on CME Group Inc.’s website, the EBS market, a platform used for foreign exchange trading, reopened at 12:00 p.m. London time. However, the notice did not provide any information about when other affected markets would resume operations, including those for equities, bonds, and commodities.

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The malfunction impacted a global trading platform where millions of contracts tracking major U.S. indexes like the S&P 500, Dow Jones Industrial Average, and Nasdaq 100 are traded daily. Market participants expressed frustration as they lost valuable trading hours during a critical period when some positions are typically rolled over from one monthly contract to the next.

CyrusOne, the operator of the data center in the Chicago area where the CME systems are housed, attributed the disruption to a cooling system malfunction at their facility.

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