CME Group and IHS Markit announced they have launched their joint venture, OSTTRA, a new post-trade services company. Rowcliffe will serve as Co-CEO and Chief Commercial Officer, with oversight for leading the company's full product portfolio and sales teams. Most recently, Rowcliffe was Global Head of Optimization Services at CME Group and Head of TriOptima and Reset. Previously, he was Head of Asia Pacific for NEX Group's post-trade and optimization businesses.

Stewart will serve as Co-CEO and Chief Operating Officer responsible for leading business strategy, operations and technology as well overseeing corporate services and finance. He has extensive experience in institutional and investment banking including serving as global head of investment banking operations and chief data officer at UBS, and in various operations and technology roles in derivatives and securities businesses at J.P. Morgan.