GREENWICH, Conn.--(BUSINESS WIRE)--Interactive Brokers Group, Inc. (NASDAQ GS: IBKR) an automated global electronic broker and market maker, today reported diluted earnings per share on a comprehensive basis of $0.30 for the quarter ended March 31, 2012, compared to diluted earnings per share on a comprehensive basis of $0.41 for the same period in 2011. Reported results on a comprehensive basis reflect the GAAP convention adopted in 2011 that requires the reporting of currency translation resul
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