Why was CME Group trading halted?

CME Group trading was halted due to a cooling issue at CyrusOne data centers, causing technical disruptions.

Which stock futures were affected by the CME Group halt?

Futures for the Dow Jones Industrial Average, S&P 500, and Nasdaq-100 were affected by the trading halt.

When did the CME Group trading issue occur?

The trading halt occurred on Friday, ahead of the resumption of normal stock market activity after Thanksgiving.

Home / Business and Economy / Trading Futures Freeze: Tech Glitch Halts Markets

Trading Futures Freeze: Tech Glitch Halts Markets

29 Nov, 2025

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Summary

U.S. index futures trading halted due to technical issues.
A cooling problem at data centers caused the disruption.
Major indices like Dow Jones, S&P 500, and Nasdaq-100 affected.

Trading Futures Freeze: Tech Glitch Halts Markets

Trading activity for U.S. index futures was abruptly suspended on Friday, leaving investors unable to assess market sentiment. The disruption occurred due to a critical cooling issue within the data centers operated by CyrusOne, which host trading for CME Group. This technical failure has resulted in a complete halt across markets for futures contracts tied to the Dow Jones Industrial Average, S&P 500, and Nasdaq-100.

The unexpected halt impacted sentiment as markets prepared to resume normal activity following the Thanksgiving holiday. The exchange acknowledged the issue, stating that a cooling problem at its data centers was the direct cause of the market suspension. This incident highlights the fragility of modern trading infrastructure and its susceptibility to unforeseen technical glitches.

As a result, investors were left in limbo, unable to trade key U.S. equity benchmarks. The situation created uncertainty for those looking to position themselves in the market after the holiday break, underscoring the reliance on stable technological systems for financial markets.