Pampa Energía S.A. is the largest independent energy company in Argentina, with participation in the electricity and oil and gas value chain. It was founded in 2005 and is headquartered in Buenos Aires. Pampa is listed on the Buenos Aires Stock Exchange and is one of the Argentine companies with a greater weight on the Merval index. Besides, Pampa is one of the Argentine companies with a greater weight on the MSCI Argentina Index. Pampa has a Level II American Depositary Share program listed in the New York Stock Exchange, and each ADS represents 25 common shares. Wikipedia