Named after the mythical three-headed dog that guards the gates of hell, Cerberus Capital Management has been a driving force in private equity. One of its most notable moves was its 2007 purchase of 80% of Chrysler from Daimler (a stake that has since been eradicated). Cerberus was also the lead investor of a group that acquired 51% of GMAC (now Ally Financial), the financing arm of General Motors. Additionally, it owns bus maker Blue Bird and gun maker Freedom Group. Although the firm made headlines with its automotive investments, its current portfolio includes supermarkets (Albertsons), building materials ( BlueLinx), resorts ( Silverleaf Resorts), health care facilities ( Steward Health Care), and more.