The KKR Group (Kohlberg Kravis Roberts & Co. L.P.) is the world's oldest, most experienced and most successful industrial investment firm. （The firm was founded in 1976 by Henry Kravis, his cousin George Roberts, and their mentor Jerome Kohlberg, whose initials the firm's name derives from. KKR's main business is the acquisition and reorganization of companies, with a strong focus on management buyouts.