Press Release

Interactive Brokers Group to Host Second Quarter Earnings Conference Call

GREENWICH, CT, July 2, 2019 - Interactive Brokers Group, Inc. (IEX: IBKR) plans to announce its second quarter financial results on Tuesday, July 16, 2019, in a release that will be issued at approximately 4:00 pm (ET). The press release will also be available on the company's website, www.interactivebrokers.com/ir.

A conference call to discuss the company's results will be held at 4:30 pm (ET) on that day, July 16.

Members of the public who would like to listen to the conference call should dial 877- 324-1965 (U.S. domestic) or 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 website, www.interactivebrokers.com/ir.

About Interactive Brokers Group, Inc.:

Interactive Brokers Group affiliates provide automated trade execution and custody of securities, commodities and foreign exchange around the clock on over 125 markets in numerous countries and currencies, from a single IBKR Integrated Investment Account to clients worldwide. We service individual investors, hedge funds, proprietary trading groups, financial advisors and introducing brokers. Our four decades of focus on technology and automation has enabled us to equip our clients with a uniquely sophisticated platform to manage their investment portfolios at the lowest cost according to Barron’s Best Online Brokers review, February 25, 2019. We strive to provide our clients with advantageous execution prices and trading, risk and portfolio management tools, research facilities and investment products, all at low or no cost, positioning them to achieve superior returns on investments.

For Interactive Brokers Group, Inc. Investors: Nancy Stuebe, 203-618-4070 or Media: Kalen Holliday, 203-913-1369.

Pursuant to Part 7.8A of the Corporations Act 2001, Interactive Brokers Australia Pty. Ltd. has prepared the following target market determinations relating to certain financial products for which it is deemed to be the issuer. Our Target Market Determinations are located here: Target Market Determinations.

Product Disclosure Statements are also available for each of these products. If applicable, you should carefully consider these Disclosures in deciding whether to acquire, or to continue to hold, the relevant financial product.