Carbon Trading Via Brokers Plunges in July as Banks Retrench

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Carbon trading via brokers including ICAP Plc and GFI Group Inc. plunged to its lowest since at least January 2011 as banks scaled back buying and selling amid tighter regulation and a record glut of permits.

The volume of EU allowances handled by six members of the London Energy Brokers’ Association dropped 61 percent in July to