OptionsHouse and tradeMONSTER to Combine to Form Leading Online Brokerage Firm — Uniquely positioned to enable active traders and investors to gain a competitive edge in the market with innovative tools and fast, reliable execution, seamlessly delivered across desktop and mobile devices. — PR Newswire CHICAGO, May 27, 2014 CHICAGO , May 27, 2014 /PRNewswire/ — Two innovative, Chicago -based online brokerage firms — OptionsHouse LLC, a subsidiary of PEAK6 Investments, L.P., and tradeMONSTER, a subsidiary of tradeMONSTER Group, Inc. — today announced definitive agreements to combine under a new standalone company, creating a market leading brokerage for active traders and investors […]