The Chicago Mercantile Exchange has suspended futures and options trading due to a glitch

On November 28, 2025, the Chicago Mercantile Exchange (CME) suspended futures and options trading due to an outage in its CyrusOne data centers. CME Group, the operator, reported that the issue was related to cooling in the data centers, which led to a market shutdown for several hours.

Reasons for the Outage

According to a statement from CME Group, "Due to cooling issues in the CyrusOne data centers, our markets are currently suspended. Our support team is working to resolve the issue shortly and will communicate preliminary reopening details to clients as soon as they are available." This incident affected not only the CME but also other platforms, such as EBS Market, used for interbank foreign exchange trading, and Bursa Malaysia Derivatives Berhad (BMD), which relies on Globex infrastructure for trading palm oil futures contracts.

Market Impact

The CME outage could have a significant impact on the stock market. Nick Tweedale, chief market strategist at AT Global Markets, commented to Bloomberg: "Traders will turn to alternative liquidity instruments where possible. We've lost one of the market's main sources of liquidity. This increases the risk of a sharp price rise in the event of a major event."

The current incident has already exceeded the duration of the previous major outage, which occurred in 2019, when markets were unavailable for about three hours. As a result of the outage, WTI crude oil futures jumped 0.7%, and Brent crude oil futures jumped 0.4%.

Market on Hold

Christopher Forbes, head of Asia and the Middle East at CMC Markets, added in a comment to Reuters that brokers are taking a significant risk by forming prices blindly. According to him, the market opening is likely to be volatile, which could lead to unexpected price movements.

Amid this uncertainty, traders and investors will closely monitor the situation and prepare for potential market changes. It was previously reported that FanDuel and CME Group are planning to launch a prediction market, which could also be affected by the current issues.

In Conclusion

The outage at the Chicago Mercantile Exchange highlights the importance of reliable infrastructure for the functioning of financial markets. In an environment where liquidity is critical, such incidents can have far-reaching consequences for traders and investors. CME Group continues to work to restore the normal operation of its platforms, and traders are hopeful for a speedy resolution.