An outage at the world's biggest exchange operator CME Group on Friday halted trading on its popular currency platform and in futures spanning foreign exchange, commodities, Treasuries and stocks.

"BrokerTec EU markets are open and trading. All other CME Group markets remain halted due to a data center cooling issue at CyrusOne," CME told Fortune.

CME Group halted trading due to data center issues. Get the latest updates on market status, causes, and what traders need to know now.

Bourses operated by CME include the Chicago Board of Trade, the New York Mercantile Exchange and the Commodity Exchange. CME also has a stake in other exchanges, including the Gulf Mercantile Exchange, which said in a notice to the market that it had also seen trade halted due to the cooling issue.

NAPLES, Fla. — For the second consecutive season, Jeeno Thitikul has captured the CME Group Tour Championship title and taken home the $4 million first-place prize at Tiburón Golf Club.

A rare 10-hour CME outage froze futures trading, disrupted trillions in global market, and sparked trader outrage over possible manipulation.

US stock futures were muted with a holiday-shortened week and downbeat month drawing to an end, before the Chicago Mercantile Exchange halted trading on Friday due to a data center glitch. Stocks have rebounded sharply this week as traders ramped up bets that the Federal Reserve will cut interest rates at its meeting in December,