Founded in 1974, Simmons & Company International is an independent investment bank specializing in the energy industry. Based in Houston, Texas, the firm has acted as a financial advisor in several transactions, including 590 merger and acquisitions, as well as handled many public debt and equity offerings. Its client list includes Enduring Resources LLC, Amerigas Propane, Caltec Limited, Petroquest Energy, Pioneer Drilling, Universal Ensco and Weatherford. Some of its services are investment banking, mergers, acquisitions, divestitures, public offerings, institutional research, sales and trading. Simmons & Company International is a member of the Financial Industry Regulatory Authority (FINRA) and Securities Investor Protection Corporation (SIPC).