Trading activity at the Chicago Mercantile Exchange (CME) came to a complete halt on Friday due to a cooling issue at one of its data centers. In a statement released early Friday morning, a CME spokesperson reported that operations were interrupted as a result of the malfunction at CyrusOne data centers. “Due to a cooling issue at CyrusOne data centers, our markets are currently halted,” the spokesperson confirmed. They assured that support teams were working diligently to resolve the issue, promising to provide updates on Pre-Open details as information becomes available.
The disruption has had wide-reaching effects, impacting various markets, including Globex futures and options markets, the foreign exchange platform EBS, and BMD markets. As a result of this halt, vital futures prices—including those for WTI crude oil, U.S. 10-year Treasurys, and the S&P 500—were not updated by 2:30 a.m. ET, according to data from LSEG.
CME Group, recognized as the largest exchange operator in the world by market value, offers trading for diverse asset classes such as agricultural commodities, energy, metals, and equities. The impact of the cooling failure marks a significant event in the trading community, as market participants await further instructions on the resumption of trading.
Furthermore, this incident is not unprecedented. The CME has faced similar challenges before; a notable instance occurred in 2014 when technical difficulties led to a shutdown of trading on the CME’s Globex electronic system, primarily affecting agricultural contracts. More recently, last year saw a temporary halt in the trading of equities, bonds, and exchange-traded funds in Switzerland, triggered by data dissemination issues at the Swiss stock exchange, SIX.
As the situation develops, market analysts and participants will be closely monitoring the resolution timeline and any necessary adjustments in trading strategies once operations resume.

