CME Outage Halts Globex Trading on Nov. 28
CME outage from a CyrusOne data-center cooling malfunction paused Globex futures and options, prompting market jitters before operations resumed.
KEY TAKEAWAYS
- CME outage halted Globex, stopping futures and options across currencies, commodities, Treasuries and equity indexes.
- A CyrusOne data-center cooling malfunction caused the system-wide halt, lasting several hours and exceeding 2019.
- Operations were gradually restored and CME stock had been quoted at $281.10 with a modest intraday gain.
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CME Group was hit by an outage on Friday, Nov. 28, 2025, when a cooling malfunction at a CyrusOne data center halted trading on its Globex electronic platform. The disruption paused futures and options trading across currencies, commodities, U.S. Treasuries, and equity indexes before operations were gradually restored.
Cooling Fault Disrupts Globex Trading
A cooling failure at a CyrusOne data center caused the halt on the Globex electronic trading system. The outage suspended trading in currency futures, commodity futures including crude oil, U.S. Treasury futures, equity-index futures such as S&P 500 contracts, and options across asset classes. These instruments are central to hedging and price discovery in global markets.
Secondary reports described the interruption as lasting several hours, exceeding the duration of a similar outage in 2019. The outage occurred on Black Friday, a day with an already shortened equity session, contributing to market jitters and a slow, chaotic start to trading.
Market Impact and CME Stock Performance
Operations were gradually restored, with stock and options trading resuming later in the morning. A midmorning snapshot showed CME Group shares at $281.10, and the stock closed with a 0.5% intraday gain. This modest movement indicated investors did not immediately penalize the exchange despite the disruption.
The outage highlighted CME’s critical role in global derivatives trading and may lead to increased operational and regulatory scrutiny of its infrastructure and reliance on third-party data centers. No official CME statement, SEC filing, or regulatory order addressing the outage had been identified as of 4:00 p.m. ET on Nov. 28, 2025.
