One of the largest derivative exchanges in the world gets taken down by a broken refrigerator.
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(Image credit: Getty / Bloomberg) The Chicago Mercantile Exchange, or CME, had to pause trading activities across the globe because of a cooling issue at one of the data centers that serve it. According to CNBC , CME is the largest derivatives exchange operator in the world, so this disruption has been felt in cities as far away as London and Kuala Lumpur. This exchange lets you trade almost everything on the market, including agriculture, energy, equity indices like S&P 500 and Nikkei 225, foreign exchange, interest rates, metals, crypto, and more.
Due to a cooling issue at CyrusOne data centers, our markets are currently halted. 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. November 28, 2025
“Due to a cooling issue at CyrusOne data centers, our markets are currently halted. 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,” CME said on its X account . It also told CNBC in a statement, “On November 27, our CHI1 facility experienced a chiller plant failure affecting multiple cooling units. Our engineering teams, along with specialized mechanical contractors, are on-site working to restore full cooling capacity. We have successfully restarted several chillers at limited capacity and have deployed temporary cooling equipment to supplement our permanent systems.”
At the time of writing, BrokerTec US Actives, which primarily electronically trades liquid U.S. Treasury securities, and BrokerTec EU, dealing in European government bonds and repo agreements, are now open. However, all the rest of the trading systems remain down.
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Key considerations
- Investor positioning can change fast
- Volatility remains possible near catalysts
- Macro rates and liquidity can dominate flows
Reference reading
- https://www.tomshardware.com/desktops/servers/SPONSORED_LINK_URL
- https://www.tomshardware.com/desktops/servers/data-center-cooling-issue-halts-worlds-largest-derivatives-exchange-cme-trading-shutdown-ripples-across-malaysia-uk-and-eu-markets#main
- https://www.tomshardware.com
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Informational only. No financial advice. Do your own research.