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CME Restarts Most Operations After Hours-Long Outage
News November 28, 2025 at 10:45 AM
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What You Need To Know
- The trading halt in futures and options was caused by a cooling system malfunction at a Chicago data center.
- The halt had gone on longer than a similar outage due to a technical error back in 2019.
- It triggered widespread frustration as market participants contemplated the prospect of a lost trading session for millions of contracts tracking major U.S. indexes.
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