CME Restarts Most Operations After Hours-Long Outage

Published on November 28, 2025

The trading halt in futures and options was caused by a cooling system malfunction at a Chicago data center.

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Frustration, Confusion Ripple Across Markets on CME Outage

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The Chicago Mercantile Exchange (CME), a crucial hub for managing global risk, experienced a nine-hour trading halt due to a data center fault on Friday, disrupting markets from S&P 500 futures to crude oil. This major outage underscores the CME's integral role in global market machinery, where its platforms handle volumes exceeding 26 million derivatives contracts daily.

The World’s First Fixed Income ETFs Turn 25

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