Group 1 - Diamondback Energy has been actively involved in upstream purchases and consolidation mergers within the oil and gas industry [2] - The long-term strategy of the industry is characterized as a boom-bust, cyclical nature, requiring patience and experience [2] Group 2 - The analysis provided in the service Oil & Gas Value Research focuses on identifying undervalued companies in the oil and gas sector, examining balance sheets, competitive positions, and development prospects [1]