. "Madison Dearborn Partners (MDP) is an American private equity firm specializing in leveraged buyouts of privately held or publicly traded companies, or divisions of larger companies; recapitalizations of family-owned or closely held companies; balance sheet restructurings; acquisition financings; and growth capital investments in mature companies."@en . . "1992Z"^^ . . . . "1.8E10"^^ . . "Madison Dearborn Partners"@en . . "50"^^ .