KKR

KKR & Co. Inc., also known as Kohlberg Kravis Roberts & Co., is an American global investment company that manages multiple alternative asset classes, including private equity, energy, infrastructure, real estate, credit, and, through its strategic partners, hedge funds... Since its founding, KKR has completed a number of transactions, including the 1989 leveraged buyout (LBO) of RJR Nabisco, which was the largest buyout in history to that point, as well as the 2007 buyout of TXU, which is currently the largest buyout completed to date. https://en.wikipedia.org/wiki/Kohlberg_Kravis_Roberts