Story perspectives

CME Trading Halted Amid Data Center Cooling Crisis

11/28/2025

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Summary

Story summary

The Chicago Mercantile Exchange (CME) halted trading after a cooling issue at CyrusOne data centers began early Friday, disrupting futures and options across markets, including foreign exchange and commodities.
Brokers reported difficulties in pricing contracts without live updates, increasing risk for market participants.
CME is working to resolve the outage but has not provided a timeline for reopening.
The outage follows previous disruptions and highlights ongoing vulnerabilities in electronic trading systems.

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Story summary

The Chicago Mercantile Exchange (CME) halted trading after a cooling issue at CyrusOne data centers began early Friday, disrupting futures and options across markets, including foreign exchange and commodities.
Brokers reported difficulties in pricing contracts without live updates, increasing risk for market participants.
CME is working to resolve the outage but has not provided a timeline for reopening.
The outage follows previous disruptions and highlights ongoing vulnerabilities in electronic trading systems.