International derivatives marketplace CME Group has reported a cooling issue at CyrusOne data centers, leading to its markets getting halted.

CME Group has issued the following notice:

“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”.

Many online brokers have been affected by the problems. OANDA Japan has confirmed the problem. Electronic trading major IG Group has also issued a statement on the matter, which can be viewed below:

“Pricing issue with CME exchange

Update – We are continuing to investigate this issue.

Nov 28, 2025 – 05:08 UTC

Investigating – We’re currently monitoring an service interruption affecting CME pricing. Please note, this is a market wide CME exchange caused issue and not IG.

The status of this interruption can be monitored on the CME website: https://www.cmegroup.com/tools-information/cme-global-command-center-system-alerts.html

At this time, we’re temporarily unable to take orders for the affected markets.

We will update as soon as we learn more.

Nov 28, 2025 – 04:12 UTC”