Interactive Brokers Group, Inc. (NASDAQ GS: IBKR), an automated global electronic broker and market maker, released its 2015 Mid-Year Report and Letter to Investors. These are available on the company's web site, www.interactivebrokers.com/ir. About Interactive Brokers Group: Interactive Brokers Group, Inc., together with its subsidiaries, is an automated global electronic broker that specializes in catering to financial professionals by offering state-of-the-art trading technology, superior execution capabilities, worldwide electronic access, and sophisticated risk management tools at exceptionally low costs. The brokerage trading platform utilizes the same innovative technology as the Company's market making business, which executes and processes trades in securities, futures and foreign exchange instruments on more than 100 electronic exchanges and trading venues around the world. As a market maker, we provide liquidity at these marketplaces and, as a broker, we provide professional traders and investors with electronic access to stocks, options, futures, forex, bonds and mutual funds from a single IB Universal Account SM. Employing proprietary software on a global communications network, Interactive Brokers Group continuously integrates its software with a growing number of exchanges and trading venues into one automatically functioning, computerized platform that requires minimal human intervention.