Amerex Founded in 1978, Amerex is a leading over-the-counter energy brokerage offering services in electricity, natural gas, emission credits and allowances, renewable energy credits, carbon credits, retail energy procurement, energy consulting and energy data services. From its office in Houston, Amerex offers liquidity and timely execution to meet the needs of a global client network of more than 1,000 firms including thousands of traders and risk management professionals. Amerex Brokers LLC is a wholly owned subsidiary of GFI Group Inc. (NYSE:GFIG), a leading inter-dealer broker specializing in over-the-counter derivatives products and related securities. GFI provides brokerage services, trading system software and market data and analytics software products for a range of credit, financial, equity and commodity instruments. GFI operates one of the largest OTC energy brokerage businesses in North America both directly and through its Amerex and StarSupply businesses.