Interactive Brokers Group To Host Third Quarter Earnings Conference Call

GREENWICH, CT, October 6, 2011 — Interactive Brokers Group, Inc. (NASDAQ GS: IBKR) plans to announce its third quarter 2011 financial results on Thursday, October 20, 2011, 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, October 20.

Members of the public who would like to listen to the conference call should dial 877-324-1965 (U.S. domestic) and 631-291-4512 (international). The number should be dialed approximately ten minutes prior to the start of the conference call. The conference call will also be accessible as an audio webcast through the Investor Relations section of the Interactive Brokers 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 specializes in routing orders and executing and processing trades in securities, futures, foreign exchange instruments, bonds and funds on more than 90 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 AccountSM. Employing proprietary software on a global communications network, Interactive Brokers is continuously integrating its software with a growing number of exchanges and trading venues into one automatically functioning, computerized platform that requires minimal human intervention.

For Interactive Brokers Group, Inc. Media: Caitlin Duffy, 203-913-1369 or Investors: Deborah Liston 203-618-4070.