The Chicago Mercantile Exchange has blamed a problem with one of its data centres as the reason for the shutdown - Christopher Dilts/Bloomberg The world’s largest financial exchange has been forced to halt trading after a fault at one of its data centres, leaving investors “flying blind” and threatening wild price swings when trading resumes. The Chicago Mercantile Exchange (CME) confirmed trading had been suspended at 2.44am on Friday morning, blaming a problem with one of its data centres. “Due to a c ...