Archive · 29 Nov 2025
CME Trading Halt Disrupts Global Markets
The CME Group's electronic trading platform, called Globex, stopped working because of a problem with the cooling system in a data center in Illinois.
This outage affected many things like stock futures, treasures, commodities, and currencies.
Traders were worried because they couldn't see important pricing information.
The outage happened during a low-activity time, which was lucky because it could have been much worse.
Everyone is now waiting to see how trading will go when the US markets reopen after the Thanksgiving holiday.
The outage lasted more than 11 hours and trading resumed at 13:35 GMT.
CME is the biggest exchange operator by market value and its shares were up 0.4% in pre-market trading.
CME's Globex electronic trading platform experienced a technical failure due to a cooling-system issue at a CyrusOne data center in Illinois.
The outage affected stock index futures, US treasuries, commodities, currencies, and other asset classes.
Traders lost access to essential pricing signals, causing significant disruption and concern.
The incident occurred during the low-liquidity Thanksgiving weekend in Asian hours, mitigating potential impacts.
US markets had closed on a high note ahead of the Thanksgiving holiday, adding to the significance of the outage.
- Who
- CME Group and global traders
- What
- Technical failure causing a trading halt on the Globex platform
- When
- Thanksgiving weekend during Asian hours, reopening at 13:35 GMT
- Where
- CyrusOne data center in Illinois
- Why
- Cooling-system failure at the data center
- Platform Affected
- CME's Globex electronic trading platform
- Cause of Outage
- Cooling-system failure at CyrusOne data center
- Assets Affected
- Stock index futures, US treasuries, commodities, currencies
- Time of Outage
- Thanksgiving weekend during Asian hours
- Trader Impact
- Loss of access to essential pricing signals
- Market Status
- US markets closed Wednesday on a high note
- Trader Sentiment
- Described as one of the most severe disruptions in years
- Outage Duration
- More than 11 hours
- Reopening Time
- 13:35 GMT
- CME Market Value
- Biggest exchange operator by market value
- CME Shares
- Up 0.4% in pre-market trading
Sources
CME Down: Dow, S&P 500, Nasdaq futures pause rally as trading halts after glitch
Keeping Cool: Heat a Key Challenge for Data Centers and AI
Global markets ‘flying blind’ after CME suffers 10-hour glitch
What Time Does The Stock Market Close Today? Check Black Friday Hours Here
How A Single Data-Centre Breakdown In Chicago Froze Global Markets
