CME Group announced that all of its markets are open again and trading normally following a 10-hour outage, according to an update posted on its website.
The statement came after futures and options trading was halted due to a technical issue at one of its key data centers. The disruption affected a wide range of contracts, including stocks, bonds, crude oil, and gold. CME said the outage was linked to cooling problems at a server facility in Illinois.
Stock futures moved higher once trading resumed at 08:30 ET (13:30 GMT). By 08:44 ET, S&P 500 futures were up 7 points, or 0.1%. Nasdaq 100 futures gained 71 points, or 0.3%, and Dow futures rose 38 points, or 0.1%.
The outage added pressure to already thin global trading volumes following the U.S. Thanksgiving holiday. Analysts cited by the Wall Street Journal warned that low volumes could amplify market swings. Others noted they still expect a calm session.
Futures play a central role in financial markets. They are used by trading desks, institutions, and individual traders to hedge risk or take positions across a wide range of assets.
CME has experienced outages before. In 2019, trading on its Globex platform was suspended for around three hours due to a technical fault.
Market disruptions have been caused by hardware and software failures, telecom and power outages, and human error. Cyberattacks have also been a factor in the past. In 2013, CME reported a “cyber intrusion” that disrupted some clearing systems and exposed customer data.
