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 ($0.24) for the quarter ended March 31, 2015, compared to diluted earnings per share on a comprehensive basis of $0.35 for the same period in 2014. Excluding other comprehensive income, the Company reported diluted earnings per share of ($0.22) for the quarter ended March 31, 2015, compared to diluted earnings per share of $0.34 for the same period in 2014. The results for the first quarter of 2015 were negatively impacted by a $121 million ... (full story)