GREENWICH, Conn.--(BUSINESS WIRE)--Interactive Brokers Group, Inc. (NASDAQ GS:IBKR) plans to announce its fourth quarter financial results on Tuesday, January 20, 2015, in a release that will be issued at approximately 4:00 pm (ET). The press release will also be available on the company's web site, www.interactivebrokers.com/ir. A conference call to discuss the company's results will be held at 4:30 pm (ET) on that day, January 20. Members of the public who would like to listen to the conferen


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