INTERACTIVE BROKERS GROUP INC revenue for the last year amounted to 3.93 B EUR, the most of which — 3.93 B EUR — came from its highest performing source at the moment, Electronic Brokerage, the year earlier bringing 2.87 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought INTERACTIVE BROKERS GROUP INC 2.74 B EUR, and the year before that — 1.98 B EUR.