Robert Walsh, OneChicago's chief operating officer, will lead the Exchange on an interim basis while a search is conducted for a new president. Mark Esposito, who has been serving OneChicago in a consulting capacity, will join the Exchange as Director of Business Development.

"I am honored to have served two years as OneChicago's president and to have worked with such a fine group of colleagues at the Exchange," Doyle said. "Having led OneChicago through triple digit volume increases, I have decided that this is an ideal time for me personally and professionally to depart with the full knowledge that the Exchange is well positioned to continue on its path of strong growth. Interactive Brokers Group, the Chicago Board Options Exchange, the Chicago Mercantile Exchange and the Chicago Board of Trade have been supportive owners and I commend them for pooling their considerable knowledge and resources to the benefit of this ongoing enterprise."

"Interactive Brokers recognizes Marty's contributions as President for the last two years, and we remain fully committed to security futures and the growth of OneChicago," said Thomas Peterffy, chairman of Interactive Brokers. "We will continue to fortify liquidity, broaden our customer base and enhance the education of how security futures can meet a variety of portfolio management needs."

"OneChicago average daily volume has increased nearly 300 percent in the last two years, from 7,565 contracts to more than 29,000 today, and listings jumped from 133 to 477 security futures," said CME Chief Executive Officer Craig Donohue. "We remain committed to security futures and enhancing OneChicago's strategic and financial positions."

"Open interest at OneChicago reached 1.8 million contracts earlier this year, which is reflective of the growing interest in security futures as an asset class," CBOE Chairman and CEO William Brodsky said. "We look forward to continuing the market-building programs that have been pursued by Marty and our other senior managers over the past two years, and we thank Marty for his leadership. We will further broaden our distribution and marketing efforts for OneChicago's growing list of security futures products."